2015

6.8

2016

8.6

2008

7.7

2024

6.0

2014

6.3

1984

8.5

1976

7.9

2002

7.5

2003

7.9

2016

7.7

2004

7.4

1990

7.4

2005

7.1

1994

8.4

2017

7.5

2017

7.1

2009

6.6

2013

6.8

2001

6.6

2011

7.0