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 1990 0 1991 0 1992 0.09234 1993 0.13568 1994 0.2039 1995 0.53405 1996 1.2937 1997 1.74835 1998 2.88716 1999 3.59023 2000 5.39083 2001 8.18015 2002 12.36655 2003 18.86341 2004 22.04623 2005 25.92623 2006 33.50629 2007 34.51721 2008 42.59096 2009 43.45374 2010 68.82683 2011 90.27476 2012 115.55524 2013 151.11294 2014 147.56282 2015 156.73525 2016 171.50904 2017 180.20298