2007

6.5

5.6

2004

6.0

2012

6.5

2003

5.9

2011

7.5

2016

10.0

9.4

2018

6.5

2009

4.1

2024

5.8

1996

5.2

1957

6.9

2015

7.3

2021

7.4

1970

6.3

2013

6.9

2010

6.9

2000

7.2