2010

7.0

2009

7.1

2008

7.5

2021

7.7

2014

6.5

1999

7.2

2010

7.1

2022

7.8

2023

0.0

2011

6.3

1987

6.3

2003

6.7

2003

7.2

2012

7.0

2001

6.1

1977

6.5

2003

5.4

2007

7.7