Year	Number of Firms
1997-01-01	90
2002-01-01	203
2003-01-01	213
2004-01-01	229
2005-01-01	243
2006-01-01	252
2007-01-01	305
2008-01-01	320
2009-01-01	329
2010-01-01	345
2011-01-01	340
2012-01-01	377
2013-01-01	404
2014-01-01	421
2015-01-01	408
2016-01-01	419