1973

5.5

1974

3.4

1974

3.4

1974

5.2

1973

4.0

1972

4.7

1972

3.7

1974

3.2

1981

1.7

1974

4.0

1973

1.0

1973

2.9

1974

4.2

1972

2.4

1974

2.3

1973

1.0

1973

5.0

1973

4.8

1972

2.3

1973

4.8

1973

2.6

1973

1.0

1974

4.3

1973

4.4

1972

2.8

1972

2.7

1972

2.9

1973

2.2