"Year"	"Count"	"ObserverNumber"
1966	34	1
1967	40	1
1968	42	1
1969	54	1
1970	49	1
1971	71	1
1972	66	1
1973	56	1
1974	72	1
1976	77	1
1977	37	1
1978	32	1
1979	26	1
1980	22	1
1981	31	1
1982	28	1
1983	41	1
1984	36	1
1985	37	1
1986	44	1
1987	34	1
1988	47	1
1989	45	1
1990	41	1
1991	32	1
1992	40	1
1993	120	2
1994	96	2
1995	93	2
1996	67	2
1997	84	2
1998	90	2
1999	37	3
2000	34	3
2001	34	3
2003	43	3