Year	Number
1990	251901
1991	255150
1992	245200
1993	243198
1994	241980
1995	241109
1996	240139
1997	238677
1998	236641
1999	234461
2000	232639
2001	231504
2002	231237
2003	230419
2004	231910
2005	234753
2006	227627
2007	225748
2008	222322
2009	217700
2010	212261
2011	206433
2012	200696
2013	195783
2014	191544
2015	188113
2016	182739
2017	177062
2018	170139
2019	161938
2020	153373
2021	145110
2022	138035