Year	Number
1990	322103
1991	320338
1992	319290
1993	322241
1994	315619
1995	313384
1996	309650
1997	305650
1998	302872
1999	297307
2000	293090
2001	288909
2002	284447
2003	279831
2004	275711
2005	270533
2006	266069
2007	261789
2008	280315
2009	254006
2010	260884
2011	248470
2012	247695
2013	245870
2014	243372
2015	241955
2016	239029
2017	238702
2018	238675
2019	235444
2020	232510
2021	231423
2022	228898