Year	Number of Firms
1992-01-01	128
1997-01-01	223
2002-01-01	255
2003-01-01	308
2004-01-01	326
2005-01-01	344
2006-01-01	328
2007-01-01	345
2008-01-01	364
2009-01-01	341
2010-01-01	368
2011-01-01	398
2012-01-01	381
2013-01-01	411
2014-01-01	401
2015-01-01	444
2016-01-01	458