Year	Number
1960	0
1961	0
1962	0
1963	0
1964	-10004
1965	-4997
1966	-2001
1967	-2999
1968	-2001
1969	0
1970	2002
1971	76999
1972	-2001
1973	-19999
1974	-34997
1975	-2117
1976	-1881
1977	49617
1978	-6609
1979	-337639
1980	-52498
1981	-57715
1982	-58798
1983	-57271
1984	-54728
1985	-56107
1986	-58879
1987	-56261
1988	-45612
1989	-6835
1990	-10252
1991	-824
1992	-5664
1993	-5426
1994	-2891
1995	43672
1996	50794
1997	52526
1998	72370
1999	-31169
2000	-150955
2001	-162571
2002	-159577
2003	-153880
2004	-150349
2005	-144080
2006	-131559
2007	-119471
2008	-101560
2009	-18546
2010	-4382
2011	-4378
2012	-4545
2013	-4786
2014	-4875
2015	-4761
2016	-4432
2017	-3847
2018	-3080
2019	-4028
2020	-2016
2021	-992
2022	-82700
2023	-82700