Year	24Error	24N
1970	84.3	34
1971	112.4	183
1972	142.3	57
1973	116.7	84
1974	97.1	89
1975	117	121
1976	127.9	143
1977	132.9	30
1978	144.2	101
1979	89.5	138
1980	128.6	188
1981	125.9	190
1982	131.3	45
1983	83.4	34
1984	131.7	157
1985	109.6	151
1986	107.4	66
1987	108.6	119
1988	70.4	132
1989	95.6	215
1990	100.8	209
1991	113.5	55
1992	82.9	124
1993	101	82
1994	102.7	83
1995	87.3	408
1996	72	260
1997	87.2	75
1998	83.9	286
1999	70.2	267
2000	70.6	202
2001	74.1	182
2002	66.6	168
2003	57.3	251
2004	53.7	294
2005	55.2	402