Year	Number
1960	-76002
1961	-157306
1962	-170607
1963	-160952
1964	-97428
1965	-39596
1966	-107926
1967	-29686
1968	-74188
1969	-276885
1970	-555949
1971	-826963
1972	-869170
1973	-754897
1974	-606397
1975	-793332
1976	-1118787
1977	-1256520
1978	-427075
1979	-745341
1980	-1504337
1981	-1455311
1982	-459961
1983	-1121336
1984	-843175
1985	-743592
1986	-1116323
1987	-1000677
1988	-1261047
1989	-1106368
1990	-1910157
1991	-1277290
1992	-554755
1993	117779
1994	-813418
1995	-716275
1996	-1328875
1997	-1615341
1998	-1601895
1999	-1623214
2000	-1755124
2001	-1305428
2002	-1258969
2003	-2028974
2004	-2527889
2005	-2418881
2006	-2371027
2007	-2942933
2008	-3598144
2009	-2759037
2010	-2631839
2011	-2828315
2012	-4471618
2013	-5590166
2014	-5106325
2015	-4930202
2016	-3384235
2017	-3273479
2018	-2441744
2019	-2234511
2020	-494121
2021	-1202484
2022	-699120
2023	-670669