1972

6.9

2004

5.9

1943

7.5

2004

6.7

2007

4.5

2008

5.0

2014

5.7

2003

4.4

2005

6.2

2021

6.8

1988

6.3

2008

6.1

1986

6.7

1995

7.3

2006

5.8

2002

6.7

1999

6.5

2002

7.0

1973

6.2

2010

6.4