Year	Per 100,000 People
1972	2.1088
1973	1.1716
1977	1.1065
1978	2.2452
1980	1.1417
1981	1.1337
1982	1.1883
1983	1.0487
1986	1.1257
1990	1.1881
1991	1.2841
1992	2.5452
1995	1.3471
1996	1.2367
1998	2.5282
1999	4.681
2001	4.6176
2002	2.2326
2004	1.1081
2005	1.1246
2007	1.0796
2008	1.0635
2009	1.1422
2011	1.063
2012	2.1235
2013	1.1077