Year	Number of Firms
1997-01-01	41
2002-01-01	93
2003-01-01	121
2004-01-01	158
2005-01-01	162
2006-01-01	207
2007-01-01	223
2008-01-01	265
2009-01-01	290
2010-01-01	326
2011-01-01	322
2012-01-01	323
2013-01-01	343
2014-01-01	366
2015-01-01	368
2016-01-01	399