$20,000 The greatest robbery 16,000 中12000 saved in1969 would buy only $5,000 The value worth of things in 1979. f12,000 Dollar Savings 8,000 4,000 $12,000 saved in 1980 may buy #3, 600 worth f things in year 2000 ??∴?.?? 1940195019601970198019902000