2006

7.1

2006

7.3

2007

6.1

1999

7.8

2003

7.2

2001

6.7

2006

6.3

2001

7.4

2006

7.3

2003

6.5

1990

6.7

2001

7.5

1998

6.6

1931

8.3

2006

7.0

2013

5.4

1999

6.8

2016

6.6

2017

6.8

1992

7.7