Year per person 1800 2.763 1820 2.857 1913 8.457 1970 42.81 1971 44.7 1972 46.39 1973 49.05 1974 50.87 1975 50.06 1976 52.01 1977 53.61 1978 55.5 1979 57.23 1980 57.94 1981 58.19 1982 59.29 1983 59.66 1984 60.2 1985 60.9 1986 62.04 1987 63.23 1988 65.78 1989 68.14 1990 69.56 1991 69.87 1992 70.41 1993 69.38 1994 70.55 1995 71.72 1996 72.23 1997 73.61 1998 75.95 1999 78.17 2000 80.88 2001 81.93 2002 82.26 2003 82.61 2004 84.09 2005 85 2006 89.08 2007 101.8 2008 111.6