2013

0.0

0.0

2005

7.0

1998

6.9

1972

7.1

2002

7.1

2004

7.3

1990

7.8

2004

7.3

1997

7.9

1969

7.1

1984

6.6

1997

7.7

1994

6.3

1988

7.5

1989

6.0

1994

6.5

2001

5.4

1959

8.0

2006

7.5