54% (2000)

63% (2010)

59% (2006)

50% (1997)

40% (2000)

73% (2006)

73% (2015)

60% (2001)

63% (2002)

67% (2004)

62% (2004)

50% (2001)

59% (2002)

47% (1999)

64% (2002)

60% (1999)

59% (2007)

61% (2011)

53% (2003)

70% (2007)