1968a 1968b 1969a 1969b 1970
1971a 1971b* 1971c* 1972a 1972b*
1973a* 1973b* 1973c* 1975* 1977*
1978a* 1978b* 1978c 1979 1983*
1985 1986a 1986b* 1986c* 1988*
1989* 1990a 1990b 1990c* 1991
1992a* 1992b* 1992c* 1993 1995a
1995b 1995c 1997a 1997b* 1999
2000a* 2000b* 2000c* 2000d 2001*
2004a 2004b* 2004c* 2005a 2006a
2007a 2007b 2011 2016