Year per person 1960 476 1961 489.4 1962 518.5 1963 528.7 1964 615 1965 739.5 1966 837 1967 950 1968 1089 1969 1093 1970 1415 1971 1631 1972 1828 1973 1935 1974 1877 1975 2116 1976 2443 1977 2597 1978 2724 1979 2916 1980 3095 1981 3272 1982 3507 1983 3786 1984 4041 1985 4754 1986 4761 1987 4829 1988 4560 1989 4457 1990 4430 1991 4753 1992 4613 1993 4772 1994 4815 1995 4775 1996 4873 1997 4786 1998 4774 1999 4509 2000 4710 2001 4719 2002 4633 2003 4683 2004 4605 2005 4740 2006 4602 2007 4390 2008 4305