52% (1993)

55% (1991)

50% (1996)

45% (1995)

54% (2002)

42% (1999)

50% (1992)

66% (2003)

46% (1997)

33% (1994)

0% (2006)

45% (2003)

70% (2014)

0% (2015)

36% (1997)