1967

5.5

1975

6.4

2019

6.6

2006

6.8

1988

7.0

7.1

2003

5.0

2010

6.8

2011

6.6

1978

6.8

2023

6.2

1971

6.0

2011

6.6

2014

6.9

1996

6.5

2017

6.9

1999

6.8

1993

6.5

2018

6.3

2024

7.7