Year	Number
1977	96000
1978	141580
1979	124880
1980	104040
1981	103250
1982	99240
1983	110700
1984	109060
1985	105310
1986	99000
1987	99420
1988	104553
1989	110482
1990	14862
1991	13947
1992	11399
1993	145
1994	5298
1995	5279
1996	5305
1997	5277
1998	50603
1999	50509
2000	50477
2001	50456
2002	50614
2003	7422
2004	24900
2005	33684
2006	37158
2007	32657
2008	36668
2009	66126
2010	81518
2011	86676
2012	90173
2013	97502
2014	99362
2015	94158
2016	92256
2017	103837
2018	121305
2019	129102
2020	129902
2021	132086
2022	134554
2023	135872