Year	per 1,000 people
1960	1.85803997516632
1970	1.95099997520447
1980	1.94640004634857
1981	1.89310002326965
1989	1.71389997005463
1990	1.6596000195
1998	1.4500000477
2000	1.2
2001	1.3
2002	1.27
2003	1.31
2004	1.33
2005	1.3
2006	1.3
2007	1.33
2008	1.26
2009	1.27
2010	1.3
2011	1.3
2012	1.3
2013	1.3
2014	1.38
2015	1.38
2016	1.3
2017	1.32