2003

6.6

2013

8.0

1982

6.1

1986

6.0

1972

4.1

2013

4.7

1992

7.0

1996

7.2

1999

5.0

2000

5.6

2011

6.0

2007

7.5

2011

6.0

1997

7.5

2009

7.1

2001

8.4

1991

3.1

2007

7.4

2015

0.0

1999

0.0

1999

6.5

2004

7.6

1989

6.3

1990

0.0

2002

7.9

2006

6.7

2002

8.5

1997

5.5

1988

5.5

1997

6.8