2001

10.0

2015

7.9

2011

5.5

2013

8.0

2014

6.6

1973

6.7

1961

5.4

2015

6.5

2020

7.7

2011

7.4

1962

5.9

2017

10.0

2008

6.0

1992

7.4

1940

5.4

2015

7.3

2024

6.0