2001

7.8

2008

8.9

2022

8.4

1998

7.1

2014

7.7

1985

7.5

2016

7.4

2013

8.2

2010

7.8

2010

8.0

1999

7.9

2011

7.6

1977

7.3

2009

6.5

2019

7.3

2012

8.2

2011

7.6

2006

8.6

2025

7.8

2020

6.9