Year	Number
1960	-90632
1961	-68350
1962	-89341
1963	-82027
1964	-22675
1965	19047
1966	-27121
1967	38426
1968	1013
1969	-186871
1970	-414427
1971	-567625
1972	-631994
1973	-552044
1974	-486510
1975	-755752
1976	-1090009
1977	-1301402
1978	-396843
1979	-1135383
1980	-3103934
1981	-2434456
1982	-843863
1983	-541988
1984	-456906
1985	-951321
1986	-1219491
1987	-1274546
1988	-1408717
1989	-1130326
1990	-1943903
1991	-1185250
1992	771129
1993	355164
1994	-360184
1995	-903473
1996	-1373327
1997	-1653080
1998	-1673388
1999	-1668068
2000	-2601492
2001	-1550812
2002	-267715
2003	-1340413
2004	-1882566
2005	-1583591
2006	-1650776
2007	-2204090
2008	-2908829
2009	-2323307
2010	-2071295
2011	-1786842
2012	-2714960
2013	-3534759
2014	-2950879
2015	-2461187
2016	-913252
2017	-1485606
2018	-793991
2019	-738815
2020	205321
2021	-520309
2022	-411152
2023	-383463