2010

6.7

1997

6.5

1999

5.6

2004

7.5

2000

6.8

2005

6.3

2008

5.7

2002

6.8

1993

6.6

2000

1.7

2022

5.2

1985

6.7

2011

6.4

2005

6.6

2012

6.0

2006

5.5

2006

6.2

1997

6.5

2016

4.5

1971

7.4