1982

5.7

2011

4.6

1989

7.3

1975

4.5

2019

6.2

1972

6.4

2004

5.9

2016

5.3

1994

5.7

2021

6.2

2016

6.8

1958

7.5

2015

6.4

1973

6.2

1989

5.8

5.0

2016

7.9

2017

7.4

1937

7.0

2021

6.5