2016

6.3

1991

6.3

2001

7.5

1997

6.5

1998

0.0

1994

6.0

2006

6.3

2002

6.6

2005

7.2

1915

0.0

2005

4.8

1997

6.3

1983

6.3

1999

6.6

2000

6.0

1971

6.4

2001

7.3

2005

7.1

2015

4.3

1939

7.9