Year	Number of Firms
1997-01-01	59
2002-01-01	175
2003-01-01	216
2004-01-01	279
2005-01-01	308
2006-01-01	316
2007-01-01	368
2008-01-01	480
2009-01-01	535
2010-01-01	591
2011-01-01	587
2012-01-01	560
2013-01-01	513
2014-01-01	619
2015-01-01	628
2016-01-01	673