Actually, that was probably before the time when data became available on a broader basis, as it is now. Most of our work in building the data for what's happening in the cities has really taken place in the last five to 10 years, since there's been more open-source data. We've actually brought people onto our staff who are more statisticians and the like, rather than heritage conservation experts, because they understand how to use this data, bring it together, and then help us analyze what it means for the future of the older parts of cities.
On October 3rd, 2017. See this statement in context.