2016

5.9

2002

5.5

1996

6.0

2004

7.3

1962

7.6

1999

7.6

2005

6.2

2005

6.8

1999

7.2

2006

7.1

2007

7.3

2006

6.8

2006

6.7

1976

7.0

1984

4.8

2019

7.9

2001

6.4

1993

6.5

1998

6.5

2011

7.7