Year	Number of Firms
1992-01-01	20
1997-01-01	53
2002-01-01	30
2003-01-01	24
2004-01-01	24
2005-01-01	31
2006-01-01	30
2007-01-01	33
2008-01-01	52
2009-01-01	44
2010-01-01	52
2011-01-01	72
2012-01-01	63
2013-01-01	72
2014-01-01	68
2015-01-01	60
2016-01-01	66