1967

6.7

2014

5.8

2008

5.7

2009

6.2

2008

4.5

2021

9.2

2003

6.2

2020

6.9

2022

6.5

1990

6.7

1998

5.7

1990

6.6

2013

6.1

2011

5.0

1955

7.2

1986

7.3

6.3

2009

6.3

1961

6.9

1949

6.6