1967

7.3

2013

7.3

1992

6.5

1999

8.5

1971

7.2

2007

6.9

2001

0.0

1990

6.8

2012

7.7

2003

7.7

2004

4.9

2008

7.7

2023

7.6

2004

8.0

2010

6.5

2000

6.5

1979

7.0

1981

4.7

2002

9.1

2016

7.7