1999

7.7

1995

7.6

1994

7.5

1987

7.3

1984

7.4

1999

7.1

6.7

2001

8.1

2007

4.0

2010

10.0

2002

7.5

2006

6.1

1980

0.0

2000

6.2

1993

7.7

2005

8.8

1986

4.0

1999

7.6

2006

7.1

1992

7.1