56% (2015)

62% (1996)

37% (2004)

72% (2011)

54% (1997)

20% (1998)

30% (1997)

70% (2001)

61% (2000)

75% (2004)

57% (2012)

62% (1998)

64% (2010)

52% (2008)

62% (2005)

55% (1997)

62% (2012)

70% (1999)

60% (2012)

62% (2003)