1992

6.1

2002

7.7

2011

6.6

2004

7.9

1996

6.6

1920

6.4

1979

7.8

2023

6.8

2010

6.7

2007

6.3

2024

7.6

2013

8.2

2011

8.1

2014

7.8

2008

6.8

2002

6.0

1999

6.8

2004

5.7

2006

6.1

2004

7.4