1985

6.6

2004

6.1

2007

7.2

2000

6.4

2013

6.9

2005

6.5

2008

6.2

2007

6.0

2008

7.6

2002

5.3

2001

5.6

2009

6.7

2014

5.8

2024

7.2

1973

6.8

2024

5.7

2018

0.0

2007

7.4

2021

6.0

2016

5.2