1955

7.2

1931

5.8

1989

5.1

2011

6.5

1990

6.1

2011

7.0

2015

6.1

1982

7.7

2019

5.7

1969

7.0

1988

7.1

2018

5.3

2014

6.5

2021

6.0

2005

6.8

1994

5.9

2022

6.3

2008

6.1

2011

6.0

1975

7.5