Year	per 1,000 people
1980	8.675136144625668
1985	9.082408135718433
1986	9.126084868795804
1987	9.139242906955158
1988	9.171505449061952
1989	9.198099100526628
1990	9.272470480871272
1991	9.075314670535919
1992	9.048400619248232
1993	8.72861991085983
1994	8.364098088879224
1995	8.008971306770972
1996	7.407317468551843
1997	6.648466856249629
1998	6.292745617632853
1999	6.114181161545238
2000	5.807946602749217
2001	5.705955802537264
2002	5.761418561508163
2003	5.716684697541857
2004	5.605263516879075
2005	5.586435431721015
2006	5.564514218532739
2007	5.471805218792835
2008	5.461590218062839
2009	5.525696919171276
2010	5.41783814174983
2011	5.232009887192551
2012	5.174433373621699
2013	5.073696882495024
2014	4.780426486078241