1966

7.0

1993

6.1

2017

6.8

2009

7.5

2011

7.1

2008

4.6

1987

5.5

1950

6.8

2018

6.5

1968

6.9

2006

6.4

2021

3.8

1982

5.8

2014

6.0

2011

7.1

1998

5.4

2014

7.1

2022

7.9

1981

6.1

2021

7.4