51% (2000)

58% (2004)

52% (1996)

55% (1993)

53% (2012)

53% (1999)

52% (2005)

51% (2008)

46% (2004)

57% (2009)

61% (2018)

48% (2004)

49% (2011)

77% (1982)

51% (1997)

54% (1995)

47% (2013)

52% (1990)

55% (1992)

59% (2008)