2004

6.4

2010

5.9

2010

6.4

2007

5.8

2002

7.7

1985

8.3

2019

8.5

2003

7.8

2005

7.1

2008

6.5

2002

7.5

1988

8.1

2015

6.9

1953

7.2

1999

6.1

2001

7.7

2011

7.0

2012

6.2

1987

7.3

2018

8.2