Year	Number of Firms
1997-01-01	3
2002-01-01	10
2003-01-01	13
2004-01-01	10
2005-01-01	17
2006-01-01	14
2007-01-01	13
2008-01-01	22
2009-01-01	23
2010-01-01	13
2011-01-01	19
2012-01-01	27
2013-01-01	32
2014-01-01	29
2015-01-01	23
2016-01-01	26