1991

8.1

2008

4.7

1990

5.8

2016

10.0

2009

6.5

2000

4.8

2025

0.0

1977

7.2

2005

5.4

2001

6.2

2006

5.1

2010

6.8

2010

6.4

1999

6.7

1986

6.9

1991

4.7

1994

4.8

1998

6.4

2002

5.6

1984

6.2