Year	Number of Firms
1997-01-01	16
2002-01-01	27
2003-01-01	30
2004-01-01	39
2005-01-01	41
2006-01-01	43
2007-01-01	56
2008-01-01	69
2009-01-01	66
2010-01-01	76
2011-01-01	81
2012-01-01	86
2013-01-01	94
2014-01-01	107
2015-01-01	124
2016-01-01	132
