Year	Number
1990	305233
1991	303481
1992	305380
1993	308340
1994	304384
1995	305323
1996	305001
1997	304309
1998	304744
1999	302477
2000	301261
2001	300152
2002	298655
2003	296947
2004	294939
2005	293221
2006	291842
2007	290778
2008	291235
2009	289734
2010	290352
2011	290084
2012	289110
2013	289576
2014	290473
2015	291248
2016	291652
2017	291885
2018	291716
2019	291397
2020	289834
2021	288098
2022	286241