Year	Number of Firms
1997-01-01	98
2002-01-01	138
2003-01-01	174
2004-01-01	170
2005-01-01	199
2006-01-01	216
2007-01-01	232
2008-01-01	235
2009-01-01	225
2010-01-01	255
2011-01-01	268
2012-01-01	269
2013-01-01	291
2014-01-01	318
2015-01-01	302
2016-01-01	307