62% (2003)

67% (2010)

53% (2005)

60% (2010)

60% (2009)

46% (1995)

45% (1999)

48% (2005)

52% (2008)

55% (1990)

60% (2006)

70% (1996)

56% (2004)

36% (2005)

52% (2009)

53% (2003)

43% (1998)

72% (2003)

64% (2004)

58% (1996)