2015

7.9

2013

7.3

2014

7.8

2014

6.7

1996

7.8

1992

7.1

2002

7.2

2012

0.0

2019

6.2

1987

5.5

2011

8.1

2009

8.0

2010

7.9

2018

8.1

2002

8.6

2005

7.9

1987

7.2

1994

7.5

1975

7.3

2002

7.7