Year	per 1,000 people
2002	4.007
2003	4.187
2004	4.36
2005	4.576
2006	4.833
2007	5.118
2008	5.36
2009	5.627
2010	5.896
2011	6.103
2012	6.216
2013	6.289
2014	6.374
2015	6.534
2016	6.725
2017	6.944
2018	7.158
2019	7.344
2020	7.56