2007

6.0

2017

5.6

2016

6.2

1928

8.0

1986

7.7

1991

7.6

1961

8.0

2001

7.6

2001

7.4

1995

7.9

2004

7.7

2006

7.5

1940

7.9

1990

7.2

1943

8.2

2020

6.4

1997

7.0

1962

8.0

1987

8.1

2003

7.6