Year	Number
1990	12274
1991	12259
1992	12236
1993	12214
1994	12172
1995	12136
1996	12123
1997	12108
1998	12093
1999	12093
2000	12103
2001	12154
2002	12239
2003	12339
2004	12429
2005	12540
2006	12654
2007	12802
2008	12957
2009	13141
2010	13354
2011	13611
2012	13886
2013	14179
2014	14473
2015	14782
2016	15106
2017	15404
2018	15672
2019	15959
2020	16215
2021	16435
2022	16659