2005

8.3

2015

6.7

2017

8.0

2014

6.6

1929

6.2

2018

5.5

2016

9.6

2005

3.5

0.0

1964

5.4

1981

6.5

2008

5.0

2016

5.2

1965

5.6

2015

6.0

2020

7.0

2013

10.0

1994

6.2

2013

7.6

9.0