How many World Cups has there been?

As of the end of the 2014 World Cup, there have been 20:

1. 1930
2. 1934
3. 1938
4. 1950
5. 1954
6. 1958
7. 1962
8. 1966
9. 1970
10. 1974
11. 1978
12. 1982
13. 1986
14. 1990
15. 1994
16. 1998
17. 2002
18. 2006
19. 2010
20. 2014