2015

4.0

2007

6.2

1985

8.3

1990

7.4

2008

6.4

1985

7.7

1985

6.5

2003

6.9

1999

6.5

2019

6.8

2006

5.5

1985

7.5

2009

6.0

1939

7.5

1960

8.4

1977

6.6

1965

7.6

2004

6.0

1944

7.2

2001

7.5