2005. Foreign capital controls much of Chinese industry and plays an important role. From virtually an industrial backwater in 1978, China is now the world's biggest producer of concrete, steel, ships and textiles, and has the world's largest automobile market. Chinese steel output quadrupled between 1980 and 2000, and from 2000 to 2006 rose from 128.5 million tons to 418.8 million tons, one-third of global production. Labor productivity at some Chinese steel firms exceeds Western productivity. From 1975 to 1992, China's automobile production rose from 139,800 to 1.1 million, rising to 9.35 million in 2008. Light industries such as textiles saw an even greater increase, due to reduced government interference. Chinese textile exports increased from 4.6% of world exports in 1980 to 24.1% in 2005. Textile output increased 18-fold over the same period. This increase in production is largely the result of the removal of barriers to entry and increased competition; the number of industrial firms rose from 377,300 in 1980 to nearly 8 million in 1990 and 1996; the 2004 economic census, which excluded enterprises with annual sales below RMB 5 million, counted 1.33 million manufacturing firms, with Jiangsu and Zhejiang reporting more firms than the nationwide total for 1980. Compared to other East Asian industrial growth spurts, China's industrial performance exceeded Japan's but remained behind South Korea and Taiwan's economies. Trade and foreign investment Some scholars assert that China has maintained a high degree of openness that is unusual among the other large and populous nations, with competition from foreign goods in almost every sector of the economy. Foreign investment helped to greatly increase quality, knowledge and standards, especially in heavy industry. China's experience supports the assertion that globalization greatly increases wealth for poor countries. Throughout the reform period, the government reduced tariffs and other trade barriers, with the overall tariff rate falling from 56% to 15%. By 2001, less than 40% of imports were subject to tariffs and only 9 percent of import were subject to licensing and import quotas. Even during the early reform era, protectionist policies were often circumvented by smuggling. When China joined the WTO, it agreed to considerably harsher conditions than other developing countries. Trade has increased from under 10% of GDP to 64% of GDP over the same period. China is considered the most open large country; by 2005, China's average statutory tariff on industrial products was 8.9%. The average was 30.9%