Year	Number of Firms
1997-01-01	5
2002-01-01	13
2003-01-01	13
2004-01-01	10
2005-01-01	21
2006-01-01	26
2007-01-01	23
2008-01-01	38
2009-01-01	38
2010-01-01	24
2011-01-01	29
2012-01-01	40
2013-01-01	42
2014-01-01	40
2015-01-01	48
2016-01-01	43