2005

6.7

1970

6.1

1997

6.3

1929

7.4

1967

7.4

1968

6.8

1962

7.9

1974

6.2

2012

6.0

2014

7.1

1973

6.3

1993

4.9

2008

6.9

2014

5.9

2000

5.2

2021

5.6

2011

5.7

2020

6.1

1989

6.7

2006

5.9