Year	Number of Firms
1997-01-01	10
2002-01-01	19
2003-01-01	12
2004-01-01	14
2005-01-01	10
2006-01-01	13
2007-01-01	21
2008-01-01	23
2009-01-01	22
2010-01-01	26
2011-01-01	27
2012-01-01	17
2013-01-01	23
2014-01-01	24
2015-01-01	15
2016-01-01	21