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, 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 the 1930s, the city of John Day has served as the main economic center of the county, and boasts the largest population.

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 that time, Alberta's economic fortunes have largely tracked the price of oil, and increasingly natural gas prices.

Since 2004, the colón stopped circulating and is now never used in the country for any type of transaction ; however some stores still have prices in both colons and U. S. dollars.

Since 2003 the relative premium commanded by higher quality wool has increased with coarser wool missing out on the high prices in 2008.

Since mid-2009, oil export earnings have returned to levels seen before Operation New Dawn and government revenues have rebounded, along with global oil prices.

Since they were removed from shelves prices for them on auction sites have risen exponentially, with many sellers choosing to repaint the screwdriver in a

Since then, increasing energy prices and the pressures to eliminate PVC plastisol from automotive applications have greatly increased market share.

Since Japan has a demand for fiber to the home, Japan is looking into tapping a fiber-optic backbone line of Nippon Telegraph and Telephone ( NTT ), a domestic backbone carrier, in order to deliver this service at cheaper prices.

Since then, touristic activities on the island have developed considerably, with real estate prices reaching very high levels.

Since then, open skies agreements have resulted in increased competition and choice for consumers, coupled with falling prices for airlines.

Since stock prices reflect earning reports, stock options could be most profitably exercised when income is exaggerated, and the stock can be sold at an inflated profit.

Since his death examples of his best paintings have fetched ever-rising prices in London auction rooms.

Since the 1990s, it has become an increasingly important exurb county in the Louisville / Jefferson County, KY – IN Metropolitan Statistical Area, especially as land prices have skyrocketed in neighboring Oldham County.

Since then, its value against all major currencies has risen due, in part, to high prices for commodities ( especially oil ) that Canada exports.

Since 2000, the town's proximity Interstate 95 and the trendy downtowns of both West Palm Beach and Lake Worth, as well as its leafy streets and well maintained housing stock, has led to a fast acceleration in housing prices.

Since the company was begun during the Civil War, in an inflationary economy, when car prices tripled and quadrupled, it is possible the abrupt return to “ normal ” in 1865 may have seemed like a depression to the budding company.

Since the MacSharry reforms, cereal prices have been closer to the equilibrium level, there is greater transparency in costs of agricultural support and the ' de-coupling ' of income support from production support has begun.

Since investment banks engage heavily in trading for their own account, there is always the temptation for them to engage in some form of front running – the illegal practice whereby a broker executes orders for their own account before filling orders previously submitted by their customers, there benefiting from any changes in prices induced by those orders.

Since the introduction of the market, New Zealand has experienced shortages in 2001 and 2003, high prices all through 2005 and even higher prices and the risk of a severe shortage in 2006 ( as of April 2006 ).

Since the 1970s, the Wiener process has been widely applied in financial mathematics and economics to model the evolution in time of stock prices and bond interest rates.

Since then, the survey is conducted on only forty items, purchased by undercover surveyors through the checkouts and the prices taken from the till receipt, with the food purchased donated to local food banks.

Since it requires governments to legislate to prevent their citizens from purchasing goods at cheaper prices from other markets, and since this is clearly not in their citizens ' interests, many governments in democratic countries have chosen not to protect anti-competitive technologies such as DVD region-coding.

Since forward / futures prices converge with the spot price at maturity ( see basis ), normal backwardation implies that futures prices for a certain maturity are increasing over time.