1978, 1981, 1986, 1990, 1997, 2002, 2013 1989, 1995, 1999, 2007, 2010, 2020 1968, 1969, 1971, 1976, 1979 1977, 1980, 1983, 1987, 1993 1970, 1972, 1975 1988, 1998, 2003 1967, 1973 1984, 1991 1994, 2000 2001, 2009 2008, 2015 2004, 2017 1974 1982 1985 1992 1996 2005 2006 2011 2012 2014 2016 2018 2019 2021* 