Year	Number
1961	5000
1962	5000
1963	5000
1964	5000
1965	5000
1982	310
1983	1958
1984	2202
1985	3195
1986	2699
1987	3916
1988	4769
1989	4716
1990	4690
1991	4702
1992	4776
1993	4471
1994	14284
1995	13594
1996	15100
1997	14772
1998	13625
1999	13288
2000	14760
2001	14547
2002	15675
2003	15866
2004	14759
2005	18421
2006	9949
2007	5042
2008	13225
2009	14876
2010	20175
2011	20333
2012	24269
2013	21048
2014	22116
2015	22962
2016	15527
2017	16959
2018	18071
2019	18432
2020	13844
2021	14251
2022	14949
2023	13870