Year	Number of Firms
1997-01-01	3
2002-01-01	11
2003-01-01	13
2004-01-01	12
2005-01-01	19
2006-01-01	12
2007-01-01	11
2008-01-01	18
2009-01-01	12
2010-01-01	13
2011-01-01	13
2012-01-01	21
2013-01-01	32
2014-01-01	22
2015-01-01	16
2016-01-01	17