2016

7.8

1995

6.2

2007

6.5

2004

2.0

2013

6.5

1999

8.2

2000

7.9

2015

7.7

1984

7.4

2002

7.5

2007

5.5

2002

0.0

1994

8.3

1976

4.0

1999

8.3