Since the 1960s, composite airframes and quieter, more efficient engines have become available, and Concorde provided supersonic passenger service for more than two decades, but the most important lasting innovations have taken place in instrumentation and control.

Since the 1960s, the islands have diversified away from their traditionally agriculture-based economy towards tourism and financial services, becoming one of the wealthiest areas in the Caribbean.

Since the 1960s, the bass guitar has largely replaced the double bass in popular music as the bass instrument in the rhythm section.

Since the 1960s, blackjack has been a high profile target of advantage players, particularly card counters, who track the profile of cards that have been dealt and adapt their wager and playing strategies accordingly.

Since the 1960s / 1970s, Blissymbols have become popular as a method to teach disabled or handicapped people to communicate.

Since the 1960s, applied ethics has revived the ideas of casuistry in applying ethical reasoning to particular cases in law, bioethics and business ethics, so the reputation of casuistry is somewhat rehabilitated.

Since the international adoption of the MKS standard in the 1940s and the SI standard in the 1960s, the technical use of CGS units has gradually declined worldwide, in the United States more slowly than elsewhere.

Since the early 1960s, it has been known that volcanism has occurred on other planets and moons in the Solar System.

Since then McLean has stated that the lyrics are also somewhat autobiographical and present an abstract story of his life from the mid-1950s until the time he wrote the song in the late 1960s.

Since at least the 1960s, macroeconomics has been characterized by further integration as to micro-based modeling of sectors, including rationality of players, efficient use of market information, and imperfect competition.

Since at least the 1960s, when Marc Bloch's Feudal Society ( 1939 ) was first translated into English in 1961, many medieval historians have included a broader social aspect that includes not only the nobility but all three estates of the realm, adding the peasantry bonds of manorialism and the estates of the Church ; this is sometimes referred to as " feudal society " since it encompasses all members of society into the feudal system.

Since the 1960s, West and later reunified Germany has been attracting migrants primarily from Southern and Eastern Europe as well as Turkey, many of whom ( or their children ) over time acquired German citizenship.

Since the 1960s rather complex mathematical models have been developed, facilitated by the availability of high speed computers.

Since the 1960s, academic history has seen the emergence of new approaches and topics such as social history, demographic history, ethnic history, women's history, environmental history and cultural history.

Since the 1960s and 1970s a large body of scholarship has provided evidence and analysis of the extent to which heterosexuality and homosexuality are socially organized and historically changing.

Since the 1960s various Scottish shops and manufacturers have created vegetarian haggis, substituting various pulses, nuts and vegetables for the meat in the dish.

Since the 1950s and 1960s in particular, the Irish have become assimilated into the British population.

Since the early 1960s, it has published 12 volumes, the first in 1971 and most recently in 2008 ; three more volumes are planned.

Since the 1960s, he has worked with public interest, consumer, family farm, environmental and community organizations at the local, state and national level.

Since the 1960s, orca has steadily grown in popularity ; both names are now used.

Since the 1960s, a theory based on Linear B phonetic values suggests that Linear A language could be an Anatolian language, close to Luwian.

Since the beginning of the 1960s Ladoga has become considerably eutrophicated.

Since the 1960s, the mainland population has declined by 60-70 %; though there has been a small increase on Motunau Island.

Since the 1960s, the number of people claiming Native American ancestry has grown significantly and by the 2000 census, the number had more than doubled.

Since the 1960s the Chief rabbinate of Israel has moved somewhat closer to the positions of Haredi Judaism.

Since Mountbatten had no sons, when he was created Viscount Mountbatten of Burma of Romsey in the County of Southampton on 27 August 1946 and then Earl Mountbatten of Burma and Baron Romsey in the County of Southampton on 28 October 1947, the Letters Patent were drafted such that in the event he left no sons or issue in the male line, the titles could pass to his daughters, in order of seniority of birth, and to their heirs male respectively.

Since 1995, Jan Mayen has been administered by the County Governor ( fylkesmann ) of the northern Norwegian county of Nordland to which it is closest.

Since leaving office Major has maintained a low profile, indulging his love of cricket as president of Surrey County Cricket Club until 2002 ( and Honorary Life Vice-President since 2002 ) and commentating on political developments in the manner of a wise elder statesman.

Since the approval of Los Angeles County Propositions A and AA, Pierce College has been undergoing large-scale renovation.

Since 1896, Brooklyn has had the same boundaries as Kings County, which is now the most populous county in New York State and the second-most densely populated county in the United States, after New York County ( Manhattan ).

Since 2005, Howard County Library has consistently been ranked among the top 5 libraries in its size category by HAPLR ( Hennen's American Public Library Ratings ).

Since California considers “ all persons concerned in the commission of a crime, whether they directly commit the act constituting the offense … principals in any crime so committed ,” San Marin County Superior Judge Peter Allen Smith charged Davis with “ aggravated kidnapping and first degree murder in the death of Judge Harold Haley ” and issued a warrant for her arrest.

Since that decision, annexation plans have been halted, and Washington County started urban planning to provide city-level services to the unincorporated urban areas in the county.

Since 1996 Gower has been part of the City and County of Swansea.

Since the construction of the Adirondack Northway in the 1960s Saratoga County has consistently been the fastest growing portion of the Capital District and indeed, of upstate New York.

Since the end of the 12th century, Zweibrücken was the seat of the County of Zweibrücken, the counts being descended from Henry I ( Heinrich I.

Since the 1830s, most descendants of the Mahican are located in Shawano County, Wisconsin, where they formed the federally recognized Stockbridge-Munsee Community with Lenape people and have a reservation.

Since the late 20th century, Osceola County has experienced a significant influx of immigrants from Puerto Rico, and in the 2000 U. S. Census Puerto Rican was the largest self-reported ancestry group.

Since highway 84 is a split route, the southern segment of state route 84 runs from Livermore in Alameda County and eventually ends at California Highway 1 in San Gregorio, a coastal community located in San Mateo County.

Since the 1960s, artist William Christenberry, born in Tuscaloosa, has been photographing various structures in Hale County as part of his multi-media artistic investigations.

Since the American Civil War, whites controlled economic and political power in Hale County.

Since then Vans Skatepark in Orange County rebuilt a replica of the original Combi Pool, its been host to some of the greatest contest of the past decade. The Pipeline Skatepark also influenced the rebuild of a 20 foot full pipe in Upland's Memorial Park, It was designed by none other than Pipeline's local and most respected Steve Alba and constructed by California Skatepark and was dedicated on October 12 2002 by Mayor John Pomierski.

Since there is no county government or county seat in any of Connecticut's counties, Fairfield County, is only a geographical point of reference.

Since then, the boundaries of Weston County have been stable.

Since 1863, Webster County has voted Democratic in every presidential election with the exception of 1972.

Since 1924, Waynesboro has made numerous territorial acquisitions from areas of Augusta County through annexation and officially became an independent city in 1948.

Since 1952, Hampton has included the former Elizabeth City County and the incorporated town of Phoebus, consolidating by mutual agreement.