1977

7.0

1999

6.6

1988

5.2

2023

6.7

2020

6.4

1986

5.8

1972

6.5

2008

6.8

2004

5.7

1989

5.9

2021

6.0

2018

6.0

1953

4.8

1996

8.2

2015

6.4

1988

5.7

1975

6.9

2014

6.5

2012

7.1

6.4