2017

3.8

1927

8.1

1985

8.3

1991

6.3

2001

6.2

1991

5.7

1960

7.3

2002

6.3

1998

5.4

1998

3.5

1936

6.4

1966

0.0

2009

6.1

2005

6.7

1990

6.2

2014

6.5

1953

4.6

1999

5.3

2000

6.8

1989

5.8