51% (1982)

43% (1988)

66% (1987)

50% (1998)

66% (1989)

54% (2007)

64% (1979)

47% (1983)

67% (2007)

43% (2003)

47% (1999)

65% (1987)

55% (1996)

50% (1997)

59% (1988)

49% (1990)

55% (1983)

0% (2019)