1992

6.5

2013

7.0

1995

5.9

2009

7.9

2010

6.3

2017

6.4

2002

7.5

1979

8.2

1966

6.4

2024

7.7

1999

5.8

2003

7.3

2009

7.1

2002

6.5

2017

6.5

1982

6.7

2008

5.5

1979

7.3

2012

7.0

2000

6.6