Year	Number of Firms
1992-01-01	19
1997-01-01	77
2002-01-01	172
2003-01-01	210
2004-01-01	247
2005-01-01	263
2006-01-01	304
2007-01-01	331
2008-01-01	353
2009-01-01	326
2010-01-01	353
2011-01-01	359
2012-01-01	379
2013-01-01	398
2014-01-01	404
2015-01-01	370
2016-01-01	373