2003

5.9

2009

6.6

1997

6.1

1991

5.3

1969

6.5

2013

8.5

1988

6.3

1996

6.4

2005

4.0

2021

7.0

2001

7.3

1967

6.0

2016

3.3

2005

5.3

2023

0.0

2002

6.8

1963

7.0

2020

0.0

1937

3.2

1970

7.2