2009

7.8

1983

7.9

1999

7.5

2013

7.0

2010

8.2

2007

6.8

1977

8.2

1942

7.0

1985

6.7

2010

5.6

1981

6.5

1984

8.0

1997

7.4

2005

6.8

2017

6.1

2001

5.9

2019

6.5

2022

5.6

2021

7.1

2004

6.6