1988

6.2

2021

6.1

2003

6.3

1996

6.5

1992

5.0

1994

6.2

2006

6.8

1975

6.4

2008

5.8

2011

6.6

1943

6.4

1993

6.6

2020

6.2

2016

6.7

2004

5.6

2022

6.5

1988

6.5

2019

7.0

1999

5.9

2023

5.8