Hi Don,
This sure has been a rough winter. I am ready for spring.
The back-testing was done on data from 1998 to 2008. There were a couple of minor tweaks to the model in mid 2009 but not touched since then. The tests were always on the same out of sample range of 1998 to 2008 to always compare Apples to Apples when testing was done.
Thanks,
Patrick