2014

6.9

2025

6.6

2008

5.8

1990

7.4

1988

6.2

2011

5.6

2017

6.2

2017

6.9

2009

5.9

2019

6.5

5.3

1987

6.0

1977

5.4

1991

4.9

2023

6.7

1958

5.8

2020

5.8

2022

6.7

2020

6.7

2019

6.6