Year Quakes 1916 2 1917 5 1918 12 1919 8 1920 7 1921 9 1922 7 1923 12 1924 9 1925 12 1926 13 1927 11 1928 16 1929 15 1930 9 1931 19 1932 9 1933 8 1934 12 1935 14 1936 11 1937 9 1938 21 1939 14 1940 7 1941 13 1942 11 1943 18 1944 13 1945 5 1946 10 1947 13 1948 11 1949 9 1950 13 1951 11 1952 7 1953 9 1954 6 1955 10 1956 8 1957 21 1958 8 1959 8 1960 13 1961 12 1962 10 1963 17 1964 12 1965 18 1966 9 1967 11 1968 22 1969 14 1970 17 1971 20 1972 16 1973 9 1974 11 1975 13 1976 14 1977 10 1978 12 1979 8 1980 6 1981 10 1982 7 1983 14 1984 14 1985 15 1986 11 1987 13 1988 11 1989 9 1990 18 1991 17 1992 13 1993 12 1994 13 1995 20 1996 15 1997 16 1998 12 1999 18 2000 15 2001 16 2002 13 2003 15 2004 16 2005 11 2006 11 2007 18 2008 12 2009 17 2010 24 2011 20 2012 16 2013 19 2014 12 2015 19