Decade	Decade Start	All	Major
1851 to 1860	1851	19	6
1861 to 1870	1861	15	1
1871 to 1880	1871	20	7
1881 to 1890	1881	22	5
1891 to 1900	1891	21	8
1901 to 1910	1901	18	4
1911 to 1920	1911	21	7
1921 to 1930	1921	13	5
1931 to 1940	1931	19	8
1941 to 1950	1941	24	10
1951 to 1960	1951	17	8
1961 to 1970	1961	14	6
1971 to 1980	1971	12	4
1981 to 1990	1981	15	5
1991 to 2000	1991	14	5