2008

5.8

1999

6.2

1928

0.0

2005

6.6

1961

6.1

1994

7.1

1998

7.3

1964

6.2

1970

6.5

1993

7.0

2006

6.5

2008

5.4

1991

6.7

2000

6.9

2007

7.0

1979

5.2

2009

7.2

2015

7.3

2005

6.5

1974

5.2