Year	Number of Firms
1997-01-01	13
2002-01-01	9
2003-01-01	14
2004-01-01	21
2005-01-01	30
2006-01-01	34
2007-01-01	34
2008-01-01	42
2009-01-01	31
2010-01-01	39
2011-01-01	51
2012-01-01	49
2013-01-01	46
2014-01-01	35
2015-01-01	44
2016-01-01	47