Year	per 100 people
1992	26.95104721
1993	28.15550179
1994	30.05232315
1995	31.73430219
1996	35.29709371
1997	33.93623493
1998	30.12992701
1999	26.92655797
2000	26.12711295
2001	26.92535135
2002	28.38184599
2003	30.01795717
2004	31.71159142
2005	33.75588555
2006	36.02785347
2007	38.38223632
2008	41.14472281
2009	43.99186764
2010	47.14626435
2012	43.92750053
2013	44.11116012
2014	43.19654428
2015	42.70683698
2019	40.11392354
2020	40.33396523
2021	40.41955498