1973

7.5

1980

6.0

1995

6.5

1975

6.6

1949

6.0

1999

6.8

2003

6.1

2018

6.7

1970

2.8

2002

7.7

1997

6.6

1934

7.0

1994

6.0

1989

7.5

2019

7.6

1991

6.3

2018

8.0

1974

6.5

0.0

2021

7.8