1983

7.5

1959

7.7

1973

7.4

2019

5.6

1997

5.8

1953

7.6

2001

6.0

1973

7.2

1974

7.0

1974

7.3

2005

7.1

2002

4.2

1947

6.5

2004

6.7

2012

6.2

1995

8.0

1998

5.0

1989

7.5

2016

7.9

2021

7.4