1957

8.1

1997

7.6

1957

7.2

1977

7.4

2021

6.7

2001

7.8

2003

5.5

2017

5.9

2020

6.3

2006

7.0

1984

7.3

2017

3.3

2016

3.4

2014

6.3

1975

8.0

2006

7.8

1991

5.9

2003

7.2

1972

6.9

2005

5.5