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Year
1951
2
1953
1
1961
2
1964
1
1971
2
1981
2
1982
1
1989
4
1990
5
1991
2
1992
1
1998
2
2000
10
2001
410
2002
1
2007
1
2008
2
2009
3
2010
25
2011
2