Year	Number of Firms
1992-01-01	21
1997-01-01	38
2002-01-01	51
2003-01-01	56
2004-01-01	56
2005-01-01	66
2006-01-01	72
2007-01-01	80
2008-01-01	99
2009-01-01	105
2010-01-01	109
2011-01-01	127
2012-01-01	139
2013-01-01	130
2014-01-01	139
2015-01-01	137
2016-01-01	127