2017

8.3

2014

5.8

2008

5.2

2010

5.0

2009

5.6

2011

9.7

1970

4.9

1948

7.3

1936

6.2

2002

5.5

1986

6.4

2011

7.1

2014

7.6

2022

6.3

1970

7.7

2019

6.8

1975

5.5

1982

5.2

1987

7.9

2020

5.6