2002

7.1

1981

6.3

1978

5.2

2012

6.0

1999

6.8

1993

7.2

2003

7.1

2003

6.8

2002

6.6

2003

6.0

2000

5.0

1986

7.3

2002

6.2

2002

0.0

1979

6.2

1984

6.6

1984

6.8

1995

6.3

1977

7.4

1998

6.7