Year per person 1971 104.7 1972 112.7 1973 90.34 1974 112.1 1975 121.5 1976 133.1 1977 144.9 1978 147.2 1979 120.5 1980 134.4 1981 133.4 1982 135.3 1983 141.7 1984 142.6 1985 119.1 1986 115.3 1987 149.2 1988 142.7 1989 88.1 1990 100.2 1991 103.9 1992 107.8 1993 106.3 1994 94.1 1995 93.57 1996 93.6 1997 99.59 1998 95.41 1999 95.36 2000 90.84 2001 89.7 2002 91.33 2003 98.05 2004 101 2005 110.4 2006 115.5 2007 121.4 2008 126.8