2021

9.2

2011

7.3

1980

5.9

5.4

1973

7.8

1972

4.0

2016

6.7

2017

10.0

2017

7.9

2009

5.7

2004

4.7

2009

7.1

2012

8.0

2017

5.8

2020

6.1

1975

4.9

1983

4.9

1964

7.4