Since 1977, New Zealand has celebrated Arbor Day on June 5, which is also World Environment Day, prior to then Arbor Day, in New Zealand, was celebrated on August 4 – which is rather late in the year for tree planting in New Zealand hence the date change.

Since the late 1930s alloy steels have been used for frame and fork tubes in higher quality machines.

Since the late 1980s, evidence has become available that instillation of BCG into the bladder is an effective form of immunotherapy in this disease.

Since its introduction at games by the " Roar from 34 ", led by Wild Bill Hagy and others, in the late 1970s, it has been a tradition at Orioles games for fans to yell out the " Oh " in the line " Oh, say does that Star-Spangled Banner yet wave " in " The Star-Spangled Banner ".

Since the late nineteenth century, the South used a colloquial term, the one-drop rule, to classify as black a person of any known African ancestry.

Since the late nineteenth century, only two brief periods of violence have marred its democratic development.

Since there is no evidence that late Maastrichtian nonavian dinosaurs could burrow, swim or dive, they were unable to shelter themselves from the worst parts of any environmental stress that occurred at the K – T boundary.

Since the late 1990s, Orange has also been working in conjunction with singer / songwriter Craig Deanto, and they have released an album titled Who Hears the Cries.

Since 2000Actually the most important are: Cable Onda ( 40 % share ), Cable and Wireless ( started on late 2009 ) and CTV.

Since these geographic considerations imply that, not including the hill within, the walls would be willfully making the city prone to attack from it, some scholars, including the late 19th century surveyors of the Palestine Exploration Fund, consider it unlikely that a wall would ever have been built that would cut the hill off from the city in the valley ; archaeological evidence for the existence of an earlier city wall in such a location has never been found.

Since the late 1990s, custom dog tags have become fashionable amongst musicians ( particularly rappers ), and as a marketing giveaway item.

Since the late 1980s, prominent individuals and organizations have recognized the seminal importance of Engelbart's contributions.

Since the late 1990s, Dublin has experienced a significant level of net immigration, with the greatest numbers coming from the European Union, especially the United Kingdom, Poland and Lithuania.

Since the late 19th century, differential geometry has grown into a field concerned more generally with the geometric structures on differentiable manifolds.

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 the late 1980s, the field has been revived in the wake of progress made in the related fields of psycholinguistics, neurolinguistics, evolutionary anthropology, evolutionary psychology, and cognitive science.

Since the late ' 60s, the exploitation of oil increased production and reserves are estimated at 4. 036 million barrels

Since its acquisition of Verant in late 1999, SOE develops, runs, and distributes EverQuest.

Since the late 1990s, almost all release prints have used polyester film stock.

Since the late 1990s, bzip2, a file compression utility based on a block-sorting algorithm, has gained some popularity as a gzip replacement.

Since the late 1970s, towns in the north began industrial production through maquiladoras, especially in San Pedro Sula and Puerto Cortés.

Since the late 1980s, Indonesia has made significant changes to its regulatory framework to encourage economic growth.

* interface to personal computers: Since the late 1990s, most pumps can interface with personal computers for managing and documenting pump programming and / or to upload data from the pump.

Since the late 1990s, the Jamaican government has set an agenda to push the development of technology in Jamaica.

Since the late Middle Ages the Kingdoms of England and Scotland had been evolving towards a quasi-oligarchical or collegiate form of government in which the monarch was held to rule with the consensus of the land-owning upper classes.

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 at least the 1940s, the approach of traditional Christians was to apply the meaning of cult such that it included those religious groups who use other scriptures beside the Bible or have teachings and practices deviating from traditional Christian teachings and practices.

Since the 1940s, rumors have circulated that Hoover was gay.

Since the early 1940s, Kingman Reef has had very little human contact, though amateur radio operators from around the world have occasionally visited the reef to put it " on the air " in what is known as a DX-pedition.

Since the 1940s, the Hanford site has employed a majority of residents.

Since 1958, the terms Beat Generation and Beat have been used to describe the antimaterialistic literary movement that began with Kerouac in the 1940s, stretching on into the 1960s.

Since the 1940s, maps of the federal interstate highway system depicted that highway taking a northern route, with no interstate highway running through Lynchburg, but the federal government assured Virginia that the highway's route would be decided by the state.

Since New Mexico's statehood to the early 1940s Rio Arriba county was a traditional republican county.

Since the 1940s, the SBC has moved away from some of its regional identification.

Since the 1940s when the United States Army Air Forces established a training facility here, Indian Springs has been home for many military groups.

Since the late 1940s it has become a combination of a bedroom suburb for Ithaca and a modest tourist destination, with restaurants, and antique stores.

Since the 1940s area residents considered the city to be a part of Greater Houston.

Since 1940s, the term " strike fighter " was occasionally used in the navies to refer to fighter aircraft capable of performing air-to-surface strikes, such as the Westland Wyvern and Blackburn Firebrand.

Since the 1940s sunglasses have been popular as a fashion accessory, especially on the beach.

Since the 1940s, the company has added many specialized dictionaries, language aides, and other references to its repertoire.

Since the 1940s the community has gradually diminished through emigration.

Since the early 1940s, millions of American workers have been exposed to asbestos dust.

Since 2001, the party is led by Renato Rabelo ( a former member of the Popular Action guerrilla group ), which succeeded João Amazonas, which had been a leader of the party since the late 1940s and died in the following year.

Since the 1940s, the majority of deaths in the United States have resulted from heart disease, cancer, and other degenerative diseases.

Since the 1940s, when decades of the Great Migration resulted in millions of African Americans having migrated from the South, no state has had a majority of African-American residents.

Since the 1940s, the complex has been owned and operated by the Cosío family.

Since the 1940s, it has often been considered a loaded term because of its use in opposition to federally mandated racial desegregation.

Since the 1940s it has moved consciously beyond its historic Dutch-German-Russian cultural roots and has expanded into many other cultural groups.

Since the 1940s, the Irish and UK air traffic control service providers have worked effectively together.