Year	Number of Firms
1992-01-01	6
1997-01-01	19
2002-01-01	24
2003-01-01	41
2004-01-01	48
2005-01-01	43
2006-01-01	50
2007-01-01	36
2008-01-01	60
2009-01-01	43
2010-01-01	36
2011-01-01	44
2012-01-01	50
2013-01-01	49
2014-01-01	52
2015-01-01	43
2016-01-01	44