Year	Number of Firms
1992-01-01	4
1997-01-01	10
2002-01-01	13
2003-01-01	12
2004-01-01	10
2005-01-01	15
2006-01-01	13
2007-01-01	20
2008-01-01	19
2009-01-01	21
2010-01-01	26
2011-01-01	30
2012-01-01	28
2013-01-01	29
2014-01-01	37
2015-01-01	37
2016-01-01	47