2013

6.5

2007

8.7

1989

8.0

1993

8.2

1990

7.9

2006

7.0

2011

7.3

2008

0.0

1989

7.8

2015

8.3

1994

7.8

2007

8.5

2014

0.0

2000

8.4

1997

4.0

2016

7.4

1967

6.2

2004

8.2

2016

2.4

2024

4.8