79% (1993)

76% (2019)

67% (2000)

57% (2010)

63% (2004)

67% (2017)

56% (2020)

66% (1999)

73% (1991)

59% (2002)

60% (2001)

70% (1997)

64% (2006)

67% (2002)

67% (1996)

56% (2002)

54% (2008)

52% (2013)

43% (2000)

60% (1999)