Year	Number of Firms
1992-01-01	73
1997-01-01	173
2002-01-01	191
2003-01-01	248
2004-01-01	255
2005-01-01	263
2006-01-01	275
2007-01-01	332
2008-01-01	331
2009-01-01	318
2010-01-01	364
2011-01-01	419
2012-01-01	477
2013-01-01	461
2014-01-01	462
2015-01-01	441
2016-01-01	375