59% (1987)

61% (1989)

58% (1990)

64% (1991)

55% (1996)

75% (1992)

62% (2005)

30% (1995)

55% (1986)

57% (2002)

70% (1999)

53% (2007)

64% (2019)

40% (2013)

50% (1994)

70% (2015)

0% (2016)

75% (1995)

50% (2001)

60% (2008)