2015

8.5

2023

8.3

2025

5.0

2011

4.5

2021

6.2

1979

10.0

2019

5.0

1987

5.9

2014

6.0

2022

5.5

2023

6.8

2021

3.6

1971

2.7

1948

6.0

1996

9.4

1998

3.7