...which, to me, would suggest that we need more progressive taxation (income, capital gains, etc.) and much less regressive taxation (sales, use fees, etc.). Of course, one can look at the GDP growth rate for the U.S., Canada, and Norway and see interesting results:

http://www.google.com/publicdata?ds=wb-wdi&met=ny_gdp_mk...

It'd be nice to figure out what datasets are available in the Public Data. That's really useful.