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Sunspot Activity Data

Year	Sunspot Number		Year	Sunspot Number		Year	Sunspot Number
1900	9.50		1936	79.70		1972	68.90
1901	2.70		1937	114.40		1973	38.00
1902	5.00		1938	109.60		1974	34.50
1903	24.40		1939	88.80		1975	15.50
1904	42.00		1940	67.80		1976	12.60
1905	63.50		1941	47.50		1977	27.50
1906	53.80		1942	30.60		1978	92.50
1907	62.00		1943	16.30		1979	155.40
1908	48.50		1944	9.60		1980	154.60
1909	43.90		1945	33.20		1981	140.40
1910	18.60		1946	92.60		1982	115.90
1911	5.70		1947	151.60		1983	66.60
1912	3.60		1948	136.30		1984	45.90
1913	1.40		1949	134.70		1985	17.90
1914	9.60		1950	83.90		1986	3.40
1915	47.40		1951	69.40		1987	29.40
1916	57.10		1952	31.50		1988	100.20
1917	103.90		1953	13.90		1989	157.60
1918	80.60		1954	4.40		1990	142.60
1919	63.60		1955	38.00		1991	145.70
1920	37.60		1956	141.70		1992	94.30
1921	26.10		1957	190.20		1993	54.60
1922	14.20		1958	184.80		1994	29.90
1923	5.80		1959	159.00		1995	17.50
1924	16.70		1960	112.30		1996	8.60
1925	44.30		1961	53.90		1997	21.50
1926	63.90		1962	37.60		1998	64.30
1927	69.00		1963	27.90		1999	93.30
1928	77.80		1964	10.20
1929	64.90		1965	15.10
1930	35.70		1966	47.00
1931	21.20		1967	93.80
1932	11.10		1968	105.90
1933	5.70		1969	105.50
1934	8.70		1970	104.50
1935	36.10		1971	66.60

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