Year	Number
1991	29754025
1992	30431209
1993	31090190
1994	31715644
1995	32441917
1996	33148803
1997	33854888
1998	33973096
1999	34134551
2000	34800731
2001	35667412
2002	36214889
2003	36730283
2004	37474638
2005	38143753
2006	38276335
2007	39112784
2008	39500136
2009	39613757
2010	39447288
2011	40871917
2012	41198445
2013	40085032
2014	40209226
2015	40201742
2016	39942542
2017	39798925
2018	40229448
2019	39952396
2020	40206906
2021	40356693
2022	40907648
2023	40813511