Year	Number
1960	-240354
1961	-253994
1962	-285849
1963	-310437
1964	-320507
1965	-314347
1966	-375662
1967	-368442
1968	-401322
1969	-420707
1970	-412262
1971	-476929
1972	-488804
1973	-487163
1974	-501700
1975	-536851
1976	-600291
1977	-429505
1978	-452263
1979	-461914
1980	-631207
1981	-921578
1982	-860686
1983	-808712
1984	-883903
1985	-927596
1986	-1032454
1987	-1010049
1988	-934047
1989	-957281
1990	-635393
1991	-789362
1992	-736813
1993	-799413
1994	-727304
1995	-812708
1996	-814722
1997	-802462
1998	-798462
1999	-870278
2000	-933168
2001	-949876
2002	-947054
2003	-1001536
2004	-922857
2005	-1043018
2006	-1021265
2007	-998162
2008	-1032747
2009	-958488
2010	-590240
2011	-495889
2012	-488483
2013	-535370
2014	-494419
2015	-424043
2016	-139806
2017	-281608
2018	-338149
2019	-424522
2020	-163087
2021	-273494
2022	-175350
2023	-161670