51% (1997)

56% (2005)

61% (2000)

64% (1999)

63% (1997)

55% (2001)

46% (2001)

61% (2009)

60% (1997)

57% (1995)

36% (2001)

47% (1997)

46% (2000)

49% (1996)

32% (2000)

35% (1996)

42% (2018)

58% (1999)

44% (1993)

43% (1975)