55% (2002)

30% (1989)

60% (2009)

61% (2006)

55% (1994)

55% (2005)

51% (2009)

58% (1992)

65% (2010)

55% (1996)

51% (2012)

54% (1996)

34% (2008)

62% (1993)

53% (2008)

60% (1989)

53% (1996)

62% (2007)

57% (2007)

42% (2008)