Year Per Capita 1965 0.46868 1966 0.47056 1967 0.47881 1968 0.49808 1969 0.49607 1970 0.49533 1971 0.48779 1972 0.53793 1973 0.70498 1974 0.82314 1975 1.13472 1976 1.43908 1977 1.86201 1978 1.78349 1979 2.18268 1980 4.87536 1981 4.95405 1982 5.18518 1983 4.93991 1984 5.38879 1985 6.37934 1986 7.289 1987 7.50424 1988 8.46756 1989 8.37451 1990 8.27449 1991 9.67246 1992 9.19852 1993 8.99744 1994 8.95655 1995 8.51267 1996 7.84319 1997 7.59775 1998 7.19026 1999 6.65928 2000 6.23343 2001 5.83097 2002 5.70992 2003 5.92421 2004 5.86825 2005 5.4527 2006 5.12664 2007 4.75044 2008 4.37537 2009 3.77387 2010 3.71698 2011 3.83212 2012 3.93306 2013 3.94659 2014 4.25847 2015 4.46358 2016 4.68919