Year	Number of Firms
1997-01-01	1
2002-01-01	6
2003-01-01	8
2004-01-01	12
2005-01-01	10
2006-01-01	14
2007-01-01	15
2008-01-01	19
2009-01-01	16
2010-01-01	12
2011-01-01	22
2012-01-01	16
2013-01-01	23
2014-01-01	20
2015-01-01	17
2016-01-01	21