2004

5.8

1958

6.8

1983

6.2

1986

6.0

1946

6.7

1977

5.3

2006

5.3

2007

5.0

1974

6.8

1990

6.2

1992

6.2

1997

5.5

2018

6.4

1991

6.6

1947

6.8

1986

5.5

2001

6.1

1999

7.0

1997

6.5

1993

7.5