Year	Number
1969	1000
1971	60
1977	1550
1983	90
1984	260
1985	180
1986	250
1987	170
1988	80
1989	250
1992	100048
1993	150155
1994	120164
1995	120082
1996	120060
1997	126882
1998	96310
1999	96310
2000	69307
2001	54753
2002	64946
2003	33992
2004	15168
2005	10161
2006	16179
2007	10456
2008	10216
2009	6943
2010	24735
2011	128283
2012	65899
2013	53243
2014	38586
2015	36495
2016	18978
2017	11109
2018	9103
2019	8225
2020	8213
2021	8169
2022	620
2023	1164