How long is this recession compared to all the others? See the Chart

From Chart of the Day, the following tidbit of information on the length of this recession:

Chart of the Day

While the stock market has rallied nicely since bottoming on March 9th, the economy continues to struggle. For some perspective on the current economic recession, today's chart illustrates the duration of all US recessions since 1900. As today's chart illustrates, the five longest recessions all began prior to 1930. The length of the current recession (now in its 18th month) is above average and the longest recession since the Great Depression.