2016

5.7

1998

6.1

1996

5.9

2000

6.6

2002

6.8

2005

6.7

1992

6.6

1996

6.0

2003

6.4

2007

4.9

1979

7.2

1971

7.0

2017

0.0

2003

7.5

2006

6.7

2007

6.6

1992

7.2

2020

10.0

2004

6.2

2007

6.5