Year	Number of Firms
1992-01-01	13
1997-01-01	40
2002-01-01	79
2003-01-01	93
2004-01-01	114
2005-01-01	143
2006-01-01	146
2007-01-01	173
2008-01-01	180
2009-01-01	177
2010-01-01	220
2011-01-01	221
2012-01-01	228
2013-01-01	269
2014-01-01	277
2015-01-01	274
2016-01-01	316