Year	Number of Firms
1992-01-01	2
1997-01-01	11
2002-01-01	12
2003-01-01	13
2004-01-01	15
2005-01-01	16
2006-01-01	18
2007-01-01	31
2008-01-01	27
2009-01-01	14
2010-01-01	22
2011-01-01	27
2012-01-01	30
2013-01-01	30
2014-01-01	29
2015-01-01	27
2016-01-01	35