Y \ X
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
12950
12949
12948
12947
12946
12945
12944
12943
12942
12941
12940
12939
12938
12937
12936
12935
12934
12933
12932
12931
12930