Year	Number of Firms
1992-01-01	23
1997-01-01	28
2002-01-01	20
2003-01-01	23
2004-01-01	21
2005-01-01	27
2006-01-01	36
2007-01-01	31
2008-01-01	40
2009-01-01	35
2010-01-01	36
2011-01-01	38
2012-01-01	43
2013-01-01	51
2014-01-01	50
2015-01-01	43
2016-01-01	47