2009

7.5

1975

7.0

2012

8.2

2014

7.3

2015

6.0

1999

8.4

2018

7.8

1987

7.7

1984

7.5

2002

7.7

2014

8.3

2000

7.6

2004

7.4

2017

7.1

2010

8.5

2018

6.9

2008

7.6

1997

7.5

1999

7.4

2010

8.0