Year	per 1,000 people
1960	1.940870340982483
1970	1.8905558484004306
1981	1.8676936621543194
1990	1.8837634274315032
2000	1.7656146270887039
2001	1.7015297027187108
2002	1.7658510502219862
2003	1.7636425053489868
2004	1.7768492378655465
2005	1.7862202021888607
2006	1.8134491505596981
2007	1.774720853994667
2008	1.7184882678441713
2009	1.6251238154460472
2010	1.7070613389036302
2011	1.6246142840053877
2012	1.554354279211642
2013	1.5562437571298482
2014	1.6376348639140776
2015	1.6104615631312968
2016	1.5781773264097676
2017	1.5340961296712874