Year	Number
1982	32500
1983	32200
1984	35000
1985	32300
1986	33100
1987	35900
1988	45500
1989	45600
1990	45400
1991	45400
1992	51700
1993	44600
1994	52800
1995	60700
1996	65400
1997	111300
1998	121400
1999	89300
2000	87674
2001	95413
2002	72759
2003	67062
2004	69538
2005	70306
2006	78717
2007	77907
2008	78100
2009	78761
2010	51069
2011	36808.25228489009
2012	34691.98417117475
2013	35340
2014	51276
2015	55485
2016	58321
2017	62670
2018	65342
2019	64745
2020	34128.644
2021	26870.421000000002