Number of Magnitude 7.0 and Greater Earthquakes per Year,
Since 1900

	1900	13	1930	13	1960	22	1990	18
	1901	14	1931	26	1961	18	1991	16
	1902	 8	1932	13	1962	15	1992 	13
	1903 	10	1933	14	1963	20	1993 	12
	1904	16	1934	22	1964	15	1994	13
	1905	26	1935	24	1965	22	1995 	20
	1906	32	1936	21	1966	19      1996    15
	1907	27	1937	22	1967	16      1997    16
	1908	18	1938	26	1968	30      1998    12
	1909	32	1939	21	1969	27      1999    18
	1910	36	1940	23	1970	29      2000    15
	1911	24	1941	24	1971	23      2001    16
	1912	22	1942	27	1972	20      2002    13
	1913	23	1943 	41	1973	16      2003    15
	1914	22	1944	31	1974	21      2004    16
	1915	18	1945	27	1975	21      2005    11
	1916	25	1946	35	1976 	25
	1917	21	1947	26	1977	16
	1918	21	1948	28	1978	18
	1919	14	1949	36	1979	15
	1920	 8	1950	39	1980	18
	1921	11	1951	21	1981	14
	1922	14	1952	17	1982	10
	1923	23	1953	22	1983	15
	1924	18	1954	17	1984	 8
	1925	17	1955	19	1985	15
	1926	19	1956	15	1986 	 6
	1927	20	1957	34	1987	11
	1928	22	1958	10	1988	 8
	1929	19	1959	15	1989	 7

	Total 1900-2005 = 2061 earthquakes
	Average: 19.4 magnitude 7.0 and greater earthquakes per year

Based on new techniques, such as moment magnitude, a systematic review of all large events is underway. It is expected that as this review continues, these numbers will change. The review has been completed for events from 1990 to the present.

Statistics were compiled from the Earthquake Data Base System of the U.S. Geological Survey, National Earthquake Information Center, Golden CO