Year	Number
1991	8929045
1992	9245774
1993	9567120
1994	9897893
1995	10232800
1996	10568332
1997	10915115
1998	11273235
1999	11659977
2000	12114213
2001	12601491
2002	13103364
2003	13606235
2004	14125163
2005	14646884
2006	15171370
2007	15697007
2008	16235546
2009	16792371
2010	17354366
2011	17926485
2012	18509902
2013	19107609
2014	19718332
2015	20338656
2016	20989035
2017	21584016
2018	22170317
2019	22761544
2020	23216615
2021	24065691
2022	24750308
2023	25501846