1993

6.5

2014

5.9

1968

6.9

2023

6.3

1985

6.1

1969

6.6

2020

6.3

2017

6.6

1993

6.2

2003

6.3

7.8

6.6

2010

7.1

1953

5.6

1990

6.7

1995

7.6

2019

6.7

2006

6.1

1980

5.9

2004

6.4