<P> Tourism is also an important part of California's economy . Yosemite National Park was established in 1890, followed by nine other national parks and seashores, as well as various other protected areas across California . Disneyland, established in 1955, and other theme parks draw millions of visitors each year . </P> <P> California also pioneered numerous innovations in retailing during the mid-20th century, particularly fast food restaurants and credit cards . Nationwide fast food chains A&W Restaurants (1919), McDonald's (1940), Taco Bell (1961), and Panda Express (1983) were all founded in California . Visa Inc. (originally BankAmericard) was born from a 1958 experiment by Bank of America in Fresno, while MasterCard (originally Master Charge) was formed as the Interbank Card Association in 1966 by a group of California banks to compete against BankAmericard . </P> <P> If the state were considered separately, it would rank as the fifth largest economy in the world, behind rest of the United States, China, Japan, and Germany as of 2017 . The state recently overtook the United Kingdom to take the fifth spot . The U.S. Bureau of Economic Analysis reported that California's GDP was $2.751 trillion in 3rd quarter 2017 . </P> <P> In 2002, the U.S. government began to use the North American Industry Classification System (NAICS) system of classifying economic activities, to better reflect today's economy . </P>

How does california economy rank in the world