Year	Number of Firms
1992-01-01	4
1997-01-01	39
2002-01-01	68
2003-01-01	78
2004-01-01	114
2005-01-01	112
2006-01-01	137
2007-01-01	175
2008-01-01	176
2009-01-01	208
2010-01-01	265
2011-01-01	313
2012-01-01	267
2013-01-01	311
2014-01-01	300
2015-01-01	222
2016-01-01	204