Using the information below, determine the productivity (measured as output per dollar input) for the each quarter and calculate the percentage change in productivity. 
Definitions:
Crops
Cultivated plants or agricultural produce, such as grain, vegetables, or fruit, considered as a group.
Removed
Taken away or eliminated from a certain place or position.
Statistical Probabilities
A measure of the likelihood that an event will occur, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
Scientific Theories
Well-substantiated explanations of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment.
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