2016

7.9

2007

8.1

2008

6.4

1996

5.5

2008

7.5

2002

6.5

2003

0.0

1999

6.8

1998

6.9

2006

4.7

2012

5.0

1991

6.6

1996

5.9

2019

6.4

2006

6.8

1931

0.0

1985

6.0

2000

7.1

1996

7.0

2005

6.2