1979

9.5

2019

8.6

1985

6.4

0.0

2015

7.7

2014

6.5

2009

6.2

1961

0.0

2020

8.2

2000

1.0

2013

4.3

1951

6.7

1971

7.3

2016

8.4

2009

5.5

2009

4.5

1994

7.5

2020

7.4

2025

8.3

1931

4.5