2007

6.0

2017

5.6

2014

6.9

2005

6.7

1991

7.6

2001

7.6

2000

8.1

2001

7.4

2004

7.7

2006

7.5

1940

7.9

1990

7.2

1970

7.2

1984

8.0

2002

7.0

1927

7.8

0.0

2019

6.7

2024

0.0

2001

7.1