1993

6.5

2023

6.4

1985

6.9

1986

6.2

2015

6.6

2012

5.8

2011

6.6

1965

6.4

2018

6.3

1999

6.8

1980

5.9

1974

6.6

2011

6.4

2020

6.5

2021

6.6

2024

6.0

6.6

1988

7.0

2005

6.9

2011

6.8