Year Per 100 People 1960 0 1965 0 1970 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0.40733 1990 0.64896 1991 1.37012 1992 2.90047 1993 4.08673 1994 5.67388 1995 9.30316 1996 11.38002 1997 13.1598 1998 20.03577 1999 28.21306 2000 32.95769 2001 44.39248 2002 61.51492 2003 79.11189 2004 91.72707 2005 110.40267 2006 128.99274 2007 157.65914 2008 181.31615 2009 197.47846 2010 208.99922 2011 246.28648 2012 286.82099 2013 299.08343 2014 315.3045 2015 315.5208 2016 321.80304