1994

6.6

2023

5.6

2021

6.7

1996

4.4

2010

6.8

2017

6.9

2009

6.1

2018

6.0

1986

6.8

2015

7.4

2008

5.4

2022

7.3

1994

5.7

2020

6.2

1975

6.4

1947

7.4

2007

6.2

1994

8.7

1975

5.6

2021

6.9