Year	Number of Firms
1992-01-01	3
1997-01-01	15
2002-01-01	31
2003-01-01	41
2004-01-01	40
2005-01-01	29
2006-01-01	36
2007-01-01	30
2008-01-01	48
2009-01-01	49
2010-01-01	45
2011-01-01	57
2012-01-01	40
2013-01-01	44
2014-01-01	50
2015-01-01	39
2016-01-01	51