1989

0.0

1977

6.1

1984

6.9

1974

6.0

2002

6.2

1995

2.5

2003

5.7

2003

2.7

2005

5.0

1970

6.1

1982

0.0

1986

6.7

1985

0.0

1972

2.9

1973

2.2