Year	Number
1991	4121437
1992	4241652
1993	4296411
1994	4400880
1995	4485913
1996	4591286
1997	4618595
1998	4765338
1999	4785587
2000	4806011
2001	4769442
2002	4815172
2003	4864673
2004	4934209
2005	4955025
2006	4987310
2007	4976699
2008	4982990
2009	5019313
2010	5028603
2011	4942452
2012	4893346
2013	4838419
2014	4784920
2015	4754679
2016	4730250
2017	4709718
2018	4682252
2019	4684352
2020	4599448
2021	4571642
2022	4651589
2023	4645359