78% (1995)

77% (1998)

75% (2020)

66% (2004)

73% (2018)

49% (2001)

70% (1998)

50% (2000)

46% (1989)

56% (2002)

60% (1997)

41% (2005)

59% (2011)

0% (2003)

46% (2002)

0% (2000)