1965

6.7

1967

6.5

2006

7.8

2010

6.8

2017

9.4

2014

8.0

2009

6.6

1991

5.3

2013

8.2

1991

7.5

1966

6.8

2005

6.8

1993

6.2

2011

5.7

2006

4.9

2004

7.3

2009

5.5

2009

4.9

2022

8.4

2015

6.9