Year	Number
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
2003	1227
2004	1171
2005	1094
2006	1158
2007	1155
2008	1135
2009	1198
2010	1207
2011	1223
2012	1195
2014	1195
2015	1183
2016	1151
2017	1120