Year	Number
1960	-3850
1961	-3760
1962	-3676
1963	-3571
1964	-3428
1965	-3243
1966	-3052
1967	-2852
1968	-2649
1969	-2355
1970	-1995
1971	-1705
1972	-1480
1973	-1417
1974	-1348
1975	-1256
1976	-1182
1977	-1143
1978	-1176
1979	-1296
1980	-1410
1981	-1517
1982	-1563
1983	-1563
1984	-1547
1985	-1548
1986	-1599
1987	-1659
1988	-1721
1989	-1680
1990	-1295
1991	-643
1992	-620
1993	-659
1994	-687
1995	-752
1996	-807
1997	-804
1998	-756
1999	-588
2000	-833
2001	-103
2002	-121
2003	-145
2004	-159
2005	-172
2006	-160
2007	19
2008	296
2009	75
2010	-36
2011	-54
2012	-64
2013	-65
2014	-65
2015	-65
2016	-65
2017	-65
2018	-65
2019	-65
2020	0
2021	-28
2022	-80
2023	-80