2014

7.3

2005

6.5

2001

6.2

2018

10.0

1999

4.8

1998

6.9

2010

6.3

1993

4.4

2018

6.5

2014

7.0

1943

6.0

2005

7.2

1997

8.0

2009

6.2

1987

5.7

1994

4.6

2008

6.8

1964

7.4

2008

7.2

1990

6.3