Year	Number
1990	620260
1991	592789
1992	564578
1993	536871
1994	509670
1995	482701
1996	455943
1997	429852
1998	411850
1999	382691
2000	360903
2001	339994
2002	319896
2003	300870
2004	284419
2005	270145
2006	256561
2007	243838
2008	232413
2009	222599
2010	229830
2011	206020
2012	198498
2013	191179
2014	184842
2015	179037
2016	175737
2017	166532
2018	161601
2019	155690
2020	149290
2021	143303
2022	138020