2007

6.1

1996

6.3

2014

6.1

2018

4.2

1995

8.0

2019

8.0

2004

5.5

2008

7.5

2021

7.4

2017

5.9

2022

7.1

1984

6.9

1978

6.0

1977

7.1

1927

5.7

3.8

1966

5.0

1954

4.6

2012

5.7

2017

6.4