2006

5.5

2017

5.7

0.0

2002

5.8

1991

6.5

1992

5.4

1997

7.1

2017

6.9

2003

6.6

2006

6.7

2007

7.2

1969

6.8

2005

4.8

1989

6.3

1992

7.0

1992

6.6

1995

6.6

1994

6.1

2008

6.0

1978

4.5