Year	Number of Firms
1992-01-01	51
1997-01-01	87
2002-01-01	84
2003-01-01	87
2004-01-01	110
2005-01-01	91
2006-01-01	97
2007-01-01	117
2008-01-01	109
2009-01-01	132
2010-01-01	135
2011-01-01	140
2012-01-01	153
2013-01-01	156
2014-01-01	156
2015-01-01	145
2016-01-01	153