Year	Number
1991	3424614
1992	3556212
1993	3710439
1994	3866547
1995	3994465
1996	4064584
1997	4120745
1998	4166378
1999	4224614
2000	4268500
2001	4236119
2002	4204886
2003	4180410
2004	4114099
2005	4115696
2006	4093836
2007	3983259
2008	4027557
2009	4141330
2010	4193491
2011	4273974
2012	4359293
2013	4428280
2014	4531372
2015	4626699
2016	4756797
2017	4841518
2018	4925538
2019	5191677
2020	5165410
2021	5263181
2022	5432855
2023	5473196