2009 - 2012 data increase in travel industry

I have been working with Fairbanks North Star Borough 2006 and 2009 implan data and now have finished a SAM with 2012. There are some suspiciously high increases in the Investment (aggregated sectors: 13001 ! Enterprises (Corporations), 14001 ! Gross Private Fixed Investment (Capital), 14002 ! Inventory Sales Deletions), and industry sector 338 Scenic and Sightseeing Transportation. The latter sector increase is more than ten times from 2009 to 2012. Employment went from a few hundred to 4,100 in just three years in the model. While we certainly have seen growth, especially in winter tourism and day tour operations and activities the increase seems disproportionate. Is it possible that previous year models under represented these sectors or are there any other reasonable explanations? Thank you for sharing any of your expertise on this topic!