FlowingData has an awesome map that shows the growth of Target superstores, from a measly one, to as many as 1,682 in 2008-just a few decades later. Words can't do it justice. It gets extra nuts in the late 1990s and early 2000s. Some snapshots below, in chronological order.From modest beginnings in 1962...
Slow(ish) and steady through 1983...
Then, bam!
For the animated map, click here. They also have one for Walmart.