Valence Year 2004

2016 2015 2014 2007 2006 2005 2004 2003 2002 2001 1996 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1954 1953 1952 1951 1950 1949 1944 1934 1933 1931