2008

6.6

1979

5.5

1972

6.6

1990

6.4

1977

5.2

1984

6.0

1975

2.0

2006

5.2

2005

4.7

1982

7.0

2017

6.0

2003

8.0

2002

7.5

2000

7.4

1986

7.2

2006

7.5

1980

5.3

1993

7.4

1979

6.9

1978

6.7