Year	Number of Firms
1992-01-01	40
1997-01-01	72
2002-01-01	39
2003-01-01	52
2004-01-01	52
2005-01-01	40
2006-01-01	50
2007-01-01	83
2008-01-01	125
2009-01-01	114
2010-01-01	152
2011-01-01	158
2012-01-01	153
2013-01-01	152
2014-01-01	150
2015-01-01	141
2016-01-01	138