Year	Number of Firms
1992-01-01	1
1997-01-01	5
2002-01-01	13
2003-01-01	9
2004-01-01	10
2005-01-01	13
2006-01-01	16
2007-01-01	29
2008-01-01	33
2009-01-01	31
2010-01-01	30
2011-01-01	30
2012-01-01	37
2013-01-01	39
2014-01-01	42
2015-01-01	46
2016-01-01	53