2015

6.1

2021

10.0

2020

5.9

2014

6.0

1995

6.5

2006

6.3

2012

6.2

2005

7.2

1996

6.5

2014

7.6

2015

4.6

2002

6.0

2000

7.9

2018

8.2

1971

7.1

2014

6.7

1986

6.2

2004

6.0

2020

6.2

2009

5.8