Year Per 100 People 1983 1.2395 1984 1.32148 1985 1.48216 1986 1.51794 1987 1.62075 1988 1.92782 1989 2.22444 1990 2.53397 1991 2.71055 1992 2.95721 1993 5.90952 1994 6.80012 1995 7.32828 1996 7.60079 1997 7.75193 1998 8.41294 1999 9.14799 2000 8.97963 2001 9.40419 2002 9.44636 2003 10.43289 2004 11.25853 2005 11.72266 2006 8.43742 2007 8.27671 2008 8.32711 2009 8.3686 2010 8.15801 2011 8.11845 2012 8.11571 2013 9.68834 2014 6.75383 2015 6.51901 2016 6.55917 2017 6.58209