2006

7.6

1997

7.9

2010

8.2

2008

7.3

1988

6.2

2023

8.0

2010

7.8

2011

7.5

2015

7.9

1998

8.1

1985

8.3

1995

5.6

2007

7.2

2014

7.7

1938

7.1

2008

6.8

1947

7.5

1968

8.1

2000

5.5