Y \ X
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
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
12660
12659
12658
12657
12656
12655
12654
12653
12652
12651
12650
12649
12648
12647
12646
12645
12644
12643
12642
12641
12640