2007

5.3

1957

7.0

2015

3.7

2006

6.2

1987

6.8

2004

6.2

1985

6.6

2006

6.7

1987

6.4

1999

6.8

1996

5.5

2003

6.8

2002

5.8

2005

5.4

1992

6.6

1950

3.3

2016

4.0

2006

5.8

1993

7.3

1998

8.3