Year	Number of Firms
1997-01-01	1
2002-01-01	3
2003-01-01	35
2004-01-01	143
2005-01-01	158
2006-01-01	176
2007-01-01	187
2008-01-01	228
2009-01-01	247
2010-01-01	232
2011-01-01	258
2012-01-01	241
2013-01-01	271
2014-01-01	310
2015-01-01	299
2016-01-01	319