2007

10.0

2020

6.2

5.4

2004

6.0

2021

7.8

2001

6.1

2017

10.0

2013

7.7

2014

7.0

1978

6.1

2012

6.4

1965

6.9

2011

6.5

1973

6.8

2014

7.9

2016

6.0

2017

5.9

1989

5.3