2006

5.3

1978

6.3

2008

6.4

2013

5.8

2008

6.4

1998

6.2

1964

0.0

1985

6.4

1999

6.1

1987

6.8

2002

6.6

1982

6.4

2003

8.1

1987

6.5

1994

5.9

1993

7.5

2002

7.0

1999

4.5

2004

7.4

2014

6.4