Year	per 1,000 people
1997	2.235
1998	2.334
1999	1.919
2000	1.967
2002	1.952
2003	1.83
2004	1.886
2005	1.862
2007	1.815
2008	1.773
2009	1.791
2010	1.793
2014	2.153
2016	1.419