2008

6.6

1949

6.0

1956

6.2

1998

5.4

2007

6.0

1993

0.0

1992

5.9

1950

0.0

1954

7.9

1953

6.5

1989

7.0

1984

7.7

1996

6.1

1988

0.0

1952

5.6