2014

6.1

2001

4.8

2018

4.2

1996

6.3

1995

8.0

2004

5.5

2007

6.1

1978

6.0

2021

7.4

2008

5.3

2019

8.0

2017

5.9

2008

7.5

1984

6.9

2022

7.1

1977

7.1

3.8

1927

5.7

2012

5.7

1954

4.6