2011

3.4

2014

5.2

2010

4.5

1977

4.1

2011

5.3

1949

3.5

2018

5.7

2000

7.4

2007

3.8

2002

6.3

2021

8.5

1990

5.9

1987

6.5

2019

6.1

2004

5.5

1992

5.0

1974

0.0

2025

5.0

2008

6.8

1999

5.4