Year	per 100 people
1975	2.010266719
1976	2.228036159
1977	2.430455224
1978	2.619094139
1979	2.797073346
1980	2.965917896
1981	3.364782028
1982	3.505567308
1983	3.635122738
1984	3.753172811
1985	3.862165327
1986	3.959751419
1987	4.043431304
1988	4.235277509
1989	4.369025358
1990	4.429793313
1991	4.634373989
1992	4.72219197
1993	4.635519288
1994	4.619544617
1995	4.44079306
1996	4.086172046
1997	3.688041395
1998	3.594787166
1999	3.433197648
2000	3.483438063
2001	3.539674292
2002	3.632053422
2003	3.674669074
2004	4.019876481
2005	4.043789536
2007	4.072260399
2008	3.917469108
2009	4.649602147
2010	4.824241165
2011	4.881295249
2012	4.939431013
2013	5.223305529
2014	5.292836667
2015	5.361293712
2016	5.363701357
2017	5.366631095
2019	5.376457521
2020	5.260286191
2021	5.148684152