1939

7.8

2006

5.5

2021

9.2

2008

6.8

1977

6.5

1964

7.4

0.0

2011

7.3

2013

8.1

2015

5.4

2007

4.0

2017

4.5

2005

8.6

2001

4.9

1999

6.2

1990

6.8

1981

7.0

2014

5.3

1937

7.1

2005

5.1