What are economic variables?

from the perspective of:

• statistics
• GDP (PPP, official exchange rates, real growth, per capita, by sector...)
  • labor force
  • unemployment rate
  • population below poverty line
  • average household income
  • inflation rate
  • state budget
  • imports
  • exports
  • production and consumtion of substational commodities
  • national debts

• system dynamics
• the above, plus all measurable variables potent of causing relations and feedbacks.