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 1993 0 1994 0 1995 0.06519 1996 1.34277 1997 2.86392 1998 6.55402 1999 20.38201 2000 31.99098 2001 44.42816 2002 53.12281 2003 57.30299 2004 62.14736 2005 66.26476 2006 78.4528 2007 85.59719 2008 103.07655 2009 121.56777 2010 128.64395 2011 137.8509 2012 147.88969 2013 147.45863 2014 162.28366 2015 158.14043 2016 161.1591 2017 176.57515