Year	Number
1964	1120000
1965	1251200
1966	1250040
1970	1000
1971	1000
1972	50
1978	63410
1979	55700
1980	24070
1981	13540
1982	12620
1983	12770
1984	11960
1985	9400
1986	8000
1987	9530
1988	15359
1989	12022
1990	8161
1991	4414
1992	2605
1993	1846
1994	1698
1995	1479
1996	1350
1997	1224
1998	1037
1999	973
2000	980
2001	1392
2002	1490
2003	1899
2004	1865
2005	1925
2006	1932
2007	89
2008	90
2009	78
2010	149
2011	146
2012	105
2013	113
2014	160
2015	109
2016	91
2017	85
2018	128
2019	128
2020	245
2021	271
2022	285
2023	301