Year	Number
1990	163230
1991	164571
1992	165898
1993	165782
1994	163422
1995	159107
1996	153001
1997	146479
1998	140262
1999	135589
2000	133583
2001	133784
2002	135512
2003	136906
2004	146856
2005	136142
2006	135498
2007	134801
2008	139709
2009	134350
2010	134181
2011	132318
2012	127976
2013	123101
2014	118371
2015	113058
2016	108728
2017	105940
2018	103137
2019	100324
2020	98232
2021	97159
2022	96068