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
9650
9649
9648
9647
9646
9645
9644
9643
9642
9641
9640
9639
9638
9637
9636
9635
9634
9633
9632
9631
9630