Year Per 100 People 1981 0.18514 1982 0.20646 1983 0.22259 1984 0.23663 1985 0.25077 1986 0.26594 1987 0.30756 1988 0.32312 1989 0.31391 1990 0.30456 1991 0.29504 1992 0.28562 1993 0.27624 1994 0.51628 1995 0.49815 1996 0.7 1997 0.69771 1998 0.98469 1999 0.98315 2000 0.99296 2001 1.07853 2002 1.32051 2003 1.38207 2004 1.44864 2005 1.32045 2006 1.26228 2007 1.2058 2008 1.15152 2009 1.09998 2010 1.42329 2011 1.46034 2012 1.43155 2013 1.37237 2014 1.33785 2015 0.96428 2016 0.89964