Year	Number of Firms
1997-01-01	4
2002-01-01	8
2003-01-01	11
2004-01-01	11
2005-01-01	13
2006-01-01	20
2007-01-01	20
2008-01-01	19
2009-01-01	14
2010-01-01	14
2011-01-01	20
2012-01-01	26
2013-01-01	31
2014-01-01	35
2015-01-01	26
2016-01-01	32