Year	Number
1990	145682
1991	141091
1992	136705
1993	132420
1994	128475
1995	126732
1996	119935
1997	110454
1998	100733
1999	91593
2000	82581
2001	74977
2002	69163
2003	61559
2004	60776
2005	53258
2006	49989
2007	47154
2008	49114
2009	43508
2010	40368
2011	38465
2012	36984
2013	35846
2014	34914
2015	34055
2016	33200
2017	32467
2018	31719
2019	30835
2020	30011
2021	29018
2022	28162