1999

6.8

1984

6.2

1985

7.7

1987

7.1

1975

5.2

1973

5.8

2007

5.2

2001

7.5

1979

6.0

1982

6.1

2014

3.0

2024

6.0

1982

6.2

1973

0.0

2006

5.0

1986

5.1

1980

5.6

2004

5.4

1973

5.9

2009

5.6