Zoho: Real GDP Comparator

The graph below compares two 20-year periods of quarterly Real GDP data. Enter a four-digit year value (a number between 1947 and 1993) in each of the two yellow cells. Note that the last data is for 2013, and 20 years before 2013 is 1993. So if you enter a start-date after 1993, the graph runs out of data and the line crashes down to zero.

The two series are indexed, each to its own start-date value. The two lines both start at the value 100. So you can see how the two 20-year periods compare by seeing which line is higher, which is lower, and how the movements differ.



Have fun!