Year	Number of Firms
1992-01-01	8
1997-01-01	23
2002-01-01	27
2003-01-01	31
2004-01-01	31
2005-01-01	27
2006-01-01	33
2007-01-01	26
2008-01-01	27
2009-01-01	40
2010-01-01	45
2011-01-01	51
2012-01-01	47
2013-01-01	42
2014-01-01	57
2015-01-01	47
2016-01-01	47