Year	Number of Firms
1992-01-01	5
1997-01-01	13
2002-01-01	13
2003-01-01	21
2004-01-01	26
2005-01-01	26
2006-01-01	37
2007-01-01	38
2008-01-01	76
2009-01-01	76
2010-01-01	53
2011-01-01	62
2012-01-01	42
2013-01-01	46
2014-01-01	49
2015-01-01	29
2016-01-01	23