Year per person 1960 127.7 1961 139.8 1962 158.8 1963 184.2 1964 208.1 1965 233.8 1966 254.4 1967 275.4 1968 299.4 1969 329.9 1970 361.5 1971 425.8 1972 447.6 1973 479.7 1974 495 1975 498.5 1976 536.5 1977 565 1978 608.1 1979 645.6 1980 670.4 1981 687.8 1982 726.7 1983 724.7 1984 765.6 1985 784.6 1986 805.5 1987 848.6 1988 868.4 1989 898.6 1990 929.4 1991 963.7 1992 980.8 1993 989.4 1994 997.5 1995 999.6 1996 1011 1997 1018 1998 1030 1999 1054 2000 1059 2001 1064 2002 1087 2003 1121 2004 1147 2005 1153 2006 1164 2007 1156 2008 1176