68% (1998)

63% (2000)

57% (2003)

55% (2018)

73% (1999)

66% (2009)

71% (2001)

71% (2003)

63% (1999)

64% (2012)

70% (2011)

59% (2010)

53% (2012)

46% (2015)

62% (2002)

62% (2012)

50% (2002)

50% (2001)

50% (2005)

57% (2006)