2008

8.9

2005

6.8

2007

6.7

2014

7.9

2004

7.9

2022

6.0

1987

7.8

2011

8.3

2001

7.8

1971

7.9

1995

6.4

1999

8.2

1979

7.5

2016

7.4

2015

7.5

2016

6.9

2010

8.0

1990

6.9

2018

8.3

1975

8.2