Year	Number of Firms
1997-01-01	1
2003-01-01	16
2004-01-01	71
2005-01-01	81
2006-01-01	105
2007-01-01	118
2008-01-01	136
2009-01-01	152
2010-01-01	134
2011-01-01	144
2012-01-01	156
2013-01-01	145
2014-01-01	123
2015-01-01	135
2016-01-01	150