2011

7.5

2005

5.7

2010

6.3

1977

6.7

2021

9.3

2010

6.3

1996

5.4

1965

6.8

2008

6.8

2012

6.0

1983

7.2

1985

6.1

2016

6.5

2002

5.4

2008

4.7

1989

7.8

2002

7.4

2000

7.0

1997

6.5

2006

6.3