2015

6.5

1990

4.7

2006

6.4

2017

6.4

1974

5.4

2011

8.0

2010

7.1

2025

7.0

1949

5.0

2017

6.0

1975

5.0

2021

7.7

2010

7.5

1936

7.0

2012

6.8

2007

4.3

2009

5.9

1934

7.4