Year	Number of Firms
1997-01-01	1
2002-01-01	1
2003-01-01	4
2004-01-01	3
2005-01-01	4
2006-01-01	2
2007-01-01	4
2008-01-01	7
2009-01-01	8
2010-01-01	18
2011-01-01	29
2012-01-01	19
2013-01-01	28
2014-01-01	23
2015-01-01	23
2016-01-01	24