Year	Number of Firms
1992-01-01	98
1997-01-01	179
2002-01-01	235
2003-01-01	281
2004-01-01	271
2005-01-01	297
2006-01-01	359
2007-01-01	391
2008-01-01	406
2009-01-01	450
2010-01-01	505
2011-01-01	520
2012-01-01	510
2013-01-01	457
2014-01-01	472
2015-01-01	463
2016-01-01	466