2015

5.9

2013

7.0

2008

7.7

1996

7.3

6.8

2003

5.7

2010

7.2

2006

6.4

1939

6.0

1987

5.8

1961

7.8

2015

7.5

2001

6.7

2012

5.4

2010

7.3

2016

7.3

2007

8.1

2021

7.8

1968

6.4

2010

7.0