1978

2.7

1992

5.4

2007

6.4

2017

6.0

1979

7.1

1933

0.0

1942

5.8

2018

0.0

2022

6.8

1984

6.3

1940

6.8

2008

7.3

1992

7.5

1999

6.6

2000

6.4

1999

7.4

1996

6.5

1978

7.5

2004

7.2

1997

6.6