Year	Number of Firms
1992-01-01	134
1997-01-01	260
2002-01-01	272
2003-01-01	260
2004-01-01	222
2005-01-01	244
2006-01-01	235
2007-01-01	263
2008-01-01	283
2009-01-01	302
2010-01-01	293
2011-01-01	309
2012-01-01	330
2013-01-01	362
2014-01-01	335
2015-01-01	325
2016-01-01	339