Consumers are basis for any economy to work out.It is the consumers for which the country works and makes sure to fulfil the demand of the market. New businesses come into existence because they create needs in the consumers and fulfil those needs. These businesses become a part of the economy and therefore give an input.
If there are no consumers, there will be o demands and the produces will have no needs or demands to fulfil which would lead to less production and therefore leading towards the fall of the economy.
24 years, i believe is the correct answer.