2002

6.4

2017

6.7

1992

5.0

1998

5.8

2004

3.8

1977

4.1

2008

6.8

2011

5.0

1991

5.8

1989

6.0

2015

4.6

2006

0.0

2009

6.0

1955

7.2

2005

6.9

2007

6.1

2000

6.7

2003

5.5

2002

5.5

2002

7.2