If you live or work in the downtown Austin area you know that it’s booming because it’s easy to see evidence of the growth on a daily basis because almost everywhere you look, it’s easy to spot a construction crane. How fast is the downtown ATX area growing though? Thanks to recent stats from bizjournals.com we know that 37 towers are in development right now. Fast Paced Growth Downtown Construction on what will be Austin’s tallest tower — 6 X Guadalupe — has started in earnest. An Extended Stay America hotel at the corner of Sixth and Guadalupe streets was demolished to make way for the 66-story office and residential…