2020

3.0

2018

5.0

1964

5.4

2012

7.6

2008

8.1

1973

6.4

1968

7.1

1990

7.4

2001

7.6

1999

7.9

2008

7.3

2023

7.1

2011

8.1

1983

5.6

1988

7.0

2010

1.0

2022

7.7

2013

6.9

1977

6.3

1976

6.9

2021

0.0