2001

7.8

1997

2.4

2002

5.1

2006

6.9

2015

7.9

1988

6.6

1995

5.4

1994

7.2

2002

7.7

2000

4.8

1988

5.7

1999

0.0

1991

4.6

1991

7.4

1991

6.6

1993

4.7

2009

8.2

2010

6.8

1989

6.1

1997

6.2

1986

7.1

1984

7.5

2003

8.0

2005

5.8

2007

3.8

1984

7.5

2003

7.6

2009

7.5

1987

4.8

1996

5.8

2010

7.9

1996

7.8

2011

8.2

2003

6.2

2000

6.8

1994

5.7

1999

8.3

1993

8.4

2003

5.9

1987

6.4

2002

7.3