Column1
1979
1979
1980
1980
1980
1980
1981
1981
1981
1982
1982
1982
1982
1982
1985
1986
1986
1986
1986
1987
1987
1987
1988
1988
1988
1988
1988
1988
1989
1989
1989
1990
1991
1991
1991
1992
1992
1992
1992
1992
1992
1995
1995
1995
1995
1995
1995
1995
1996
1996
1996
1996
1996
1996
1997
1997
1997
1997
1999
1999
2003
2003
2004
2004
2004
2004
2006
2006
2006
2007
2007
2007
2007
2007
2007
2007
2008
2009
2011
2011
2013
2013
2014
2017
2017
2018
2018
2019
2019
2019
2019
2021
2021