Year per person 1960 51.02 1961 56.04 1962 61.88 1963 68.06 1964 74.12 1965 82.06 1966 86.2 1967 93.72 1968 102.5 1969 115.9 1970 134.6 1971 157.4 1972 171 1973 186 1974 202.4 1975 216.6 1976 243.8 1977 268.2 1978 290.1 1979 312.9 1980 335 1981 357.8 1982 380 1983 372.8 1984 412.4 1985 449.9 1986 473.2 1987 495.3 1988 515.2 1989 571.5 1990 596.7 1991 665.4 1992 684.8 1993 714 1994 738.1 1995 781.4 1996 835.8 1997 829.5 1998 859.2 1999 926.2 2000 973.1 2001 1023 2002 1091 2003 1130 2004 1181 2005 1253 2006 1264 2007 1303 2008 1259