Year	per 1,000 people
1960	0.391
1965	0.517
1970	0.614
1979	0.679
1984	0.99
1987	0.968
1988	0.881
1990	1.26
1993	0.883
1994	0.845
1995	0.854
1996	0.864
1997	0.872
1998	0.901
1999	1.719
2000	1.308
2006	2.026
2007	2.074
2008	2.139
2009	2.197
2010	2.283
2011	2.348
2012	2.433
2013	2.516
2014	2.617
2015	2.705
2016	2.881
2017	2.999
2018	2.87
2019	3.208
2020	2.718
2021	2.77