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
12970
12969
12968
12967
12966
12965
12964
12963
12962
12961
12960
12959
12958
12957
12956
12955
12954
12953
12952
12951
12950