Year	Number
1969	130
1970	150
1971	140
1972	130
1973	130
1974	120
1975	120
1978	4200
1980	270
1981	214
1982	177
1983	157
1984	91
1985	91
1986	72
1987	42
1988	99
1989	96
1990	1745
1991	45826
1992	90081
1993	58255
1994	54975
1995	86116
1996	103963
1997	106649
1998	115289
1999	172506
2000	146749
2001	144231
2002	327582
2003	296627
2004	237015
2005	189985
2006	174022
2007	165636
2008	185930
2009	195625
2010	183284
2011	161664
2012	158903
2013	48725
2014	45730
2015	38620
2016	36928
2017	33246
2018	32368
2019	31251
2020	29976
2021	31735
2022	30677
2023	29807