2011

8.5

2020

6.8

2016

7.3

2003

7.5

1999

7.9

2009

7.7

2001

7.6

2009

7.9

2009

7.2

1958

6.8

2018

8.0

2009

7.3

1997

8.3

2010

8.1

1985

4.1

2009

7.0

2013

8.6

2020

7.7

2005

8.3

2024

7.3