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 the band broke up, Morrissey and Marr have attracted criticism over the division of royalties with Joyce and Rourke ; recurring speculation about a reunion, often fuelled by the pair themselves ; and their apparent efforts to maximise returns on the band's modest back-catalogue by continually repackaging the same material.

Since then, the dog has become a recurring character.

Since 1962, the Genoa International Boat Show has evolved as one of the largest annually recurring events in Genoa.

Since 2004, Stiles has been seen as the recurring character Dr. Herb Melnick in several episodes of the comedy Two and a Half Men which stars his Hot Shots co-star Jon Cryer and formerly Charlie Sheen.

Since 2007 he has had a recurring role in the TV series Bones.

Since 2004, Bostwick has had a recurring role on Law & Order: Special Victims Unit.

Since 2009, Bostwick has had a recurring role as Roger Frank on the sitcom Cougar Town which stars Courteney Cox.

Since his debut in Pinocchio, he has become a recurring iconic Disney character and has made numerous other appearances.

Since 2009, he has appeared in a recurring role on Smallville as Metallo.

Since her appearance, Birdo has been a recurring character in the spin-off titles of the series.

Since 2002, she has had a recurring role on NBC's Law & Order: Special Victims Unit, where she plays Judge Elizabeth Donnelly, who served as a Bureau Chief ADA in the Manhattan District Attorney's office before being appointed to the bench in Season 7.

Since the 1991 episode " Bart the Murderer ," Mantegna has had a recurring role on the animated comedy series The Simpsons as mob boss Fat Tony, reprising the role in The Simpsons Movie ( 2007 ).

Since they traveled many places, it was easier to remember the details of a story by using a single, consistent reference point for each recurring type of event that occurred in their tales.

Since 2008, Schirripa has had a recurring in the ABC Family show, The Secret Life of the American Teenager, as Leo, the main character Ben's dad.

Since the first installment in 1987, Espers have been a recurring group in Sega's Phantasy Star series ; Part 1, 2 and 4 all featured important, sometimes playable Esper characters ; the most notable being the character Lutz.

Since 2008, he has also had a recurring role on One Tree Hill.

Since May 1, 2009, the character has been appearing on a recurring basis after a brief return in 2008.

Since 1999, she has appeared on the show in a recurring capacity.

Since then, there have not been any reports of this problem recurring.

Since 2009, McKeon has appeared in a recurring role in the Disney Channel Original Series Sonny With a Chance, as Connie Munroe, the mother of Demi Lovato's title character.

Since so many spiral galaxies have a bar structure, it is likely that it is a recurring phenomenon in spiral galaxy development.

Since 1982, fire has been a recurring feature on the Islands of Borneo and Sumatera, burning large areas in 1987, 1991, 1994, 1997 – 98, 2001 and 2004.

Since the series producers and the actor himself felt that Ford had not worked as intended and was highly underused, the writers came up with an idea to make the character more important in a recurring role.

Since 2002 he has had a recurring role as Trevor Langan, a defense attorney on Law & Order: SVU.