Year	Number of Firms
1997-01-01	16
2002-01-01	23
2003-01-01	24
2004-01-01	26
2005-01-01	35
2006-01-01	31
2007-01-01	40
2008-01-01	47
2009-01-01	34
2010-01-01	42
2011-01-01	34
2012-01-01	44
2013-01-01	52
2014-01-01	47
2015-01-01	44
2016-01-01	42