2013

8.4

1996

6.9

2005

5.2

2020

6.5

1998

6.1

2003

6.8

1993

6.5

1996

6.5

2011

6.6

2019

6.5

1967

6.6

1980

6.4

1986

6.2

2001

6.8

1971

6.0

2009

5.8

2006

6.8

1995

5.6

2006

6.7

2021

6.1