Year per person 1960 245.2 1961 267.3 1962 300.5 1963 327.8 1964 360.3 1965 389.3 1966 415.3 1967 450.5 1968 489.2 1969 535.2 1970 591.2 1971 651.4 1972 729.4 1973 800.3 1974 842.6 1975 895.7 1976 975.4 1977 1013 1978 1078 1979 1111 1980 1162 1981 982.4 1982 968.3 1983 993.6 1984 1038 1985 1101 1986 1114 1987 1456 1988 1489 1989 1511 1990 1538 1991 1612 1992 1614 1993 1645 1994 1617 1995 1689 1996 1762 1997 1721 1998 1727 1999 1735 2000 1750 2001 1883 2002 1935 2003 2070 2004 2052 2005 2086 2006 2076 2007 2052 2008 2068