2008

7.7

1985

6.5

2010

6.3

1989

8.3

1977

8.2

2005

7.4

1972

8.7

2025

6.6

2016

7.5

1997

7.9

1992

6.9

2009

5.9

2006

7.1

1988

8.1

2011

7.1

1992

7.7

2012

7.2

2004

6.4

1990

7.4

2017

7.2