2015

6.6

1933

6.2

1986

6.4

2014

6.0

2005

6.6

1952

7.6

1996

5.8

1987

5.2

1995

5.6

1990

6.1

2001

6.4

2018

6.5

1949

7.5

1998

5.1

2011

5.5

1999

6.4

1961

6.7

2003

7.3

2009

7.9

1948

7.0