1993

5.5

1964

7.0

1997

6.5

2017

6.9

2008

5.7

1963

5.9

2019

6.0

1986

6.2

1972

6.4

2019

6.0

2018

7.4

2016

6.3

2020

6.7

1995

7.8

2019

7.2

2016

6.9

1985

7.2

2018

5.3

1987

6.5

1973

7.5