Year	per 100 people
1981	0.347210407
1982	0.408324095
1983	0.433496689
1984	0.457521423
1985	0.496354278
1986	0.533325218
1987	0.568500552
1988	0.601959982
1989	0.622037124
1990	0.64978853
1991	0.636989098
1992	0.624637444
1993	0.612719407
1994	0.667905409
1995	0.786646312
1996	0.772141744
1997	0.758037854
1998	0.806361973
1999	0.85272875
2000	0.867201644
2001	0.939879658
2002	1.500886793
2003	1.588698453
2004	1.562240208
2005	1.594618027
2006	1.618771184
2007	1.150005318
2008	1.127908123
2009	1.099619573
2010	0.507981404
2011	0.502294885
2012	0.494631321
2013	0.39956317
2014	0.393748427
2015	0.053882345
2016	0.053127504
2017	0.054512597
2018	0.053775641
2019	0.05333124
2020	0.053065403
2021	0.052412875