2006

6.4

2001

6.7

2018

6.9

2017

5.3

2002

4.6

2016

7.0

2000

7.7

2012

8.4

1988

6.5

2004

7.9

1979

5.7

2009

6.7

1983

7.0

2024

6.9

2007

8.1

1984

7.4

2005

7.7

2002

6.0

2014

6.0

2014

7.5

2015

5.8

2016

7.0

2020

6.0

1999

8.3

1983

6.2