1984

5.7

1990

5.7

2005

6.9

1990

6.0

1955

7.0

2009

4.6

2003

5.3

1996

0.0

2019

6.7

2001

7.5

1987

6.9

1944

8.1

2008

6.6

2007

6.1

2014

7.1

1916

6.2

1998

7.0

2000

6.6

1994

5.8

2001

6.9