1986

7.7

1924

8.1

1962

6.9

2001

6.4

1920

5.4

1928

6.0

1956

4.0

1964

6.0

1990

4.9

1971

4.5

1984

6.8

1993

6.2

2005

4.3

2008

6.7

1996

5.3

2003

0.0

2017

0.0

1984

5.8

1958

6.9

1956

6.1