Year per Person 1965 0.00155 1966 0.00143 1967 0.00162 1968 0.00152 1969 0.00153 1970 0.0028 1971 0.0038 1972 0.00595 1973 0.00663 1974 0.0073 1975 0.02789 1976 0.21635 1977 0.68012 1978 0.95987 1979 1.38377 1980 1.43013 1981 1.59001 1982 1.83351 1983 2.0408 1984 2.23565 1985 2.25994 1986 2.24607 1987 2.17513 1988 2.01291 1989 1.60828 1990 1.60194 1991 1.59157 1992 1.6393 1993 1.73789 1994 2.18887 1995 2.24032 1996 2.23087 1997 2.19173 1998 2.2651 1999 2.33273 2000 2.14229 2001 1.97483 2002 1.95656 2003 1.78398 2004 1.59655 2005 1.41134 2006 1.26527 2007 1.25138 2008 1.15969 2009 1.0897 2010 0.99782 2011 0.8166 2012 0.69531 2013 0.63016 2014 0.61559 2015 0.6944 2016 0.72266