1986

6.2

2017

6.6

2013

6.5

1999

6.8

1949

6.2

2008

6.7

2023

6.4

1975

6.3

1993

6.5

1980

5.9

1975

6.4

1953

7.2

1985

6.9

2009

6.8

2020

6.4

2011

6.6

2020

6.1

1965

6.4

1987

5.3

1993

6.5