An Economics research student was examining statements made by various finance ministers in a given economy at different times in the past ten years. He was particularly interested in the following three statements:

1. "If the GNP growth rate is less than 2% this year, the unemployment rate will increase."
2. "In the coming year the unemployment rate and the inflation rate will both increase significantly"
3. "Last year the tax rate was reduced and government expenditure increased but the unemployment rate increased."

Analyse in turn how each of the above situations could have occurred.