1997

8.3

2006

6.6

1982

7.1

2002

7.7

2004

8.0

2005

7.8

2007

7.7

1982

6.8

2010

6.4

2005

5.7

1996

6.8

1984

6.1

2024

7.4

2004

5.4

2019

7.5

1995

7.3

2017

6.6

1941

7.0

2000

6.5

2015

6.0