2011

7.1

1972

8.7

2016

7.9

1997

8.4

2004

8.4

1990

7.5

1959

8.1

2014

8.5

1998

7.8

1994

8.3

2001

8.5

2016

7.6

2014

7.8

1977

8.2

2007

7.2

1976

8.1

2006

6.6

2001

7.9

1998

7.9

2013

7.8