Year	Number
1960	-278217
1961	-448479
1962	-466582
1963	-570183
1964	-554339
1965	-641739
1966	-725268
1967	-556700
1968	-597850
1969	-851172
1970	-1211735
1971	-1631246
1972	-1461330
1973	-1516110
1974	-1627932
1975	-1347837
1976	-1183014
1977	-937072
1978	-1943610
1979	-935316
1980	468167
1981	709476
1982	-889278
1983	-1185544
1984	-1624672
1985	-1283988
1986	-1440684
1987	-1454494
1988	-1565922
1989	-1834353
1990	-272480
1991	-2778004
1992	-4627814
1993	-3864499
1994	-3326497
1995	-3171657
1996	-3305365
1997	-2744125
1998	-3070159
1999	-3003130
2000	-1997274
2001	-2663815
2002	-4626612
2003	-3740498
2004	-3374074
2005	-4609725
2006	-5796773
2007	-5885579
2008	-5330618
2009	-4500241
2010	-3110401
2011	-3704127
2012	-2729806
2013	-1606564
2014	-1714235
2015	-2522119
2016	-3576241
2017	-2923639
2018	-3424189
2019	-3643144
2020	-869283
2021	-1569362
2022	-9195009
2023	-1414332