Year	Number
1990	166964
1991	168609
1992	169902
1993	169681
1994	167144
1995	164791
1996	158327
1997	151407
1998	144866
1999	140008
2000	137888
2001	138043
2002	139778
2003	139454
2004	149405
2005	138692
2006	138061
2007	137394
2008	142293
2009	136924
2010	136721
2011	134812
2012	130419
2013	125489
2014	120706
2015	115341
2016	110972
2017	108088
2018	105214
2019	102312
2020	100143
2021	98994
2022	97943