1984

6.1

1982

5.9

2020

7.2

2020

7.2

1999

8.0

2009

6.7

1987

6.8

2011

5.2

2003

7.8

2012

6.8

2018

6.3

2015

7.3

2008

6.3

2002

6.0

7.0

1990

6.3

2006

6.6

2012

6.5

2010

5.8

2012

5.2