2015

3.0

2002

7.6

1997

6.6

1998

8.3

1959

7.8

1999

7.0

1969

6.8

1995

6.2

1992

5.4

2006

6.4

1997

6.2

2006

5.4

2005

7.2

1971

0.0

2007

5.3

2008

8.0

1988

5.4

1995

7.3

0.0

1951

7.6