Year	Number of Firms
1997-01-01	27
2002-01-01	82
2003-01-01	93
2004-01-01	126
2005-01-01	130
2006-01-01	162
2007-01-01	204
2008-01-01	238
2009-01-01	227
2010-01-01	241
2011-01-01	269
2012-01-01	281
2013-01-01	308
2014-01-01	315
2015-01-01	338
2016-01-01	385