2002

6.2

1997

6.8

2005

6.7

1972

3.7

2005

6.6

2003

6.4

1990

6.7

2001

5.9

1976

3.3

1992

0.0

1995

6.8

1988

5.6

2004

6.3

1974

7.9

2005

6.2

1996

6.5

2001

6.2

1982

6.1

1975

4.3

2020

0.0