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

Since the early 1930s, the company has promoted spin-off reference works.

Since the 1930s, prices and wages had been controlled, but money had been plentiful.

Since the 1930s, the Estrada Doctrine has served as a crucial complement to these principles.

Since the 1930s, all nations have closely monitored the inflow and outflow of capital, and most economists agree that a favorable balance of trade is desirable.

Since the 1930s, Paraguayans have regarded Solano López as the nation's foremost hero.

Since the late 1930s, SF fans have organized conventions, non-profit gatherings where the fans ( some of whom are also professionals in the field ) meet to discuss SF and generally enjoy themselves.

Since the production of high-quality semiconductor materials was still decades away, Lilienfeld's solid-state amplifier ideas would not have found practical use in the 1920s and 1930s, even if such a device were built.

Since the early 1930s, the Polish government introduced a set of policies designed to Polonize all minorities ( Belarusians, Ukrainians, Jews, etc .).

Since the 1930s, many rural workers have moved to the big cities.

Since the late 1930s the monoplane has been the most common form of plane.

Since the 1930s the Hill Cumorah Pageant is held annually at the hill by The Church of Jesus Christ of Latter-day Saints and regularly attracts thousands to its performances.

Since the 1930s, however, coups d ' état have disrupted this democracy.

Since achieving stability in the early 1930s, the NFL had never fielded more than 10 teams.

Since the late 1930s it has been the most common form for a fixed wing aircraft.

Since the 1930s industrial construction of the city has begun.

Since its crystallization in the 1930s, computation has been primarily approached from two traditions: engineering, which seeks to build practical systems using computations ; and mathematics, which seeks to prove theorems about computation ( albeit already in the 1970s computing as a discipline was described as being at the intersection of mathematical, engineering, and empirical / scientific traditions ).

Since the 1930s, the population of the community has gradually declined.

Since then, the Old Regent has been painstakingly rebuilt and restored once again, including recreating historic panels in the auditorium and the original 1930s carpeting.

Since it was also miles away from the Plandome Road School, the Manhasset school district built a conveniently located Munsey Park Elementary School in the 1930s.

Since the 1930s, Calabash has been known for its distinctive style of fried seafood, which has come to be known as " Calabash Style.

Since then, the City of Etowah has ridden the waves of economic downturns and successes, such as the closing of the L & N shops in the 1930s and the recruitment of new industries, to evolve into the city that it is today.

Since the 1930s, the Baak Doi label heaquartered in Shanghai had been published under the EMI banner and since then, EMI had also been the dominant label in the cantopop market in Hong Kong until the genre's decline in the mid 1980s.

Since the 1930s, construction kits compatible with Meccano were manufactured in the Soviet Union.

Since the university's establishment in the city in 1837, the histories of the University of Michigan and Ann Arbor have been closely linked.

Since German reunification on 3 October 1990, Berlin has been one of the three city states, together with Hamburg and Bremen, among the present 16 states of Germany.

Since May 2009, the portions of Broadway through Duffy Square, Times Square, and Herald Square have been closed entirely to automobile traffic, except for cross traffic on the Streets and Avenues, as part of a traffic and pedestrianization experiment, with the pavement reserved exclusively for walkers, cyclists, and those lounging in temporary seating placed by the city.

Since 1987 the Congress operates in the port city of Valparaíso, about 110 kilometers (~ 70 mi.

Since the 1980s, many motion pictures have been filmed in the city, most notably The Blues Brothers ; Ferris Bueller's Day Off ; Home Alone ; The Fugitive ; I, Robot ; Wanted ; Batman Begins ; The Dark Knight ; and Transformers: Dark of the Moon.

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 beginning of Norman rule in the 12th century, the city has functioned as the capital in varying geopolitical entities: Lordship of Ireland ( 1171 – 1541 ), Kingdom of Ireland ( 1541 – 1800 ), island as part of the United Kingdom of Great Britain and Ireland ( 1801 – 1922 ), and the Irish Republic ( 1919 – 1922 ).

Since reunification, the German government has spent vast amounts of money on reintegrating the two halves of the city and bringing services and infrastructure in the former East Berlin up to the standard established in West Berlin.

Since its construction, it has become a landmark and a symbol for the city.

Since the 1990s, the Sunday brunch has also become common, especially in city cafés.

Since 2001 it is part of the Hanover district ( Region Hannover ), which is a municipal body made up from the former district ( Landkreis Hannover ) and city of Hanover ( note: although both Region and Landkreis are translated as district they are not the same ).

Since inaugural event in 1950, Indianapolis is the only city in the United States to have hosted the event.

Since then, no city in Japan has had the name " Tokyo " ( present-day Tokyo is not officially a city ).

* Since its 1824 renaming in his honor, the capital city of the West African country of Liberia has been named Monrovia.

Since 1933, Jacksonville has been the site of the annual Florida vs. Georgia Football Classic, a major college football rivalry game between the University of Florida Gators and the University of Georgia Bulldogs, and since 1946, the city has hosted the Gator Bowl, one of the oldest annual college football bowl games.

Since the Marxist revolution in 1978, the city has been a target of foreign-backed militant groups such as the Mujahideen, Taliban, Haqqani network, Hezbi Islami, and others.

Since 2008 the Afghan National Security Forces ( ANSF ) are in charge of security in the city.

Since 1992 the city is the seat of the Diocese of Legnica.

Since the 1970s the city has also been home to a rich, if fluctuating, array of independent theatre groups and some show / musical companies.

Since the enactment of EU legislation concerning the concentration of particulate in the air, environmental groups such as Greenpeace have staged large protest rallies to urge the city council and the State government to take a harder stance on pollution.

Since then, Munich has become Germany's third largest city.

Since then, the event has expanded into a full weekend and is held in a different city each year.