Year	Number of Firms
2002-01-01	1
2003-01-01	4
2004-01-01	20
2005-01-01	23
2006-01-01	23
2007-01-01	32
2008-01-01	28
2009-01-01	30
2010-01-01	23
2011-01-01	25
2012-01-01	15
2013-01-01	26
2014-01-01	26
2015-01-01	18
2016-01-01	33