2007

6.9

2020

1.0

2000

5.7

2003

6.2

1995

6.5

2009

7.5

2016

6.8

2004

5.6

2002

6.3

1991

5.8

1992

5.0

2004

3.0

2004

5.5

2016

4.3

2017

6.7

1944

5.4

1989

6.0

2004

3.8

2002

6.1

2006

5.1