1981

9.2

1975

9.0

2020

6.1

2021

1.0

2019

8.0

2006

5.2

2019

5.9

1951

3.5

2017

9.0

2017

10.0

2007

7.7

1941

5.4

2021

10.0

2013

6.1

1989

7.0

2015

6.7

2005

6.4

1980

7.0