2017

7.8

2013

5.8

2009

6.1

2011

7.0

2015

6.9

2012

6.2

2005

7.8

2010

7.7

1994

6.8

2015

7.2

1984

6.1

2013

6.5

2012

7.0

2024

7.1

1993

6.4

2017

6.1

2014

7.6

1981

6.4

2010

5.2

1990

5.8