Provide an example to illustrate the relationship between the growth rate, net expenditure on durable goods, and the accumulated stock of durable goods.
Consider an economy with a 5% growth rate, $100 billion in net expenditure on durable goods, and an initial stock of durable goods of $1,000 billion. In one year, the accumulated stock of durable goods will be $1,000 billion + $100 billion * (1 + 0.05) = $1,105 billion.