Year	Number of Firms
1992-01-01	4
1997-01-01	6
2002-01-01	14
2003-01-01	16
2004-01-01	16
2005-01-01	19
2006-01-01	19
2007-01-01	21
2008-01-01	27
2009-01-01	28
2010-01-01	30
2011-01-01	35
2012-01-01	30
2013-01-01	31
2014-01-01	32
2015-01-01	35
2016-01-01	34