2008

6.3

2002

5.5

2000

5.5

1989

9.3

2014

5.0

1996

6.2

2004

6.0

1983

6.5

1987

5.3

2020

6.2

2010

4.6

1975

7.3

2016

7.1

2014

7.3

2009

5.5

2016

7.7

2018

6.3

1972

6.4

2002

6.5

2006

4.1