1998

6.9

2017

6.1

1988

5.2

1973

6.2

1994

6.1

2010

6.3

1967

7.0

2020

0.0

1980

5.1

2003

6.8

1995

6.3

2019

9.1

2023

7.7

2017

7.8

1994

6.8

1987

6.8

1986

5.8

1970

6.7

1997

7.1

1964

6.9