Year	Number of Firms
1992-01-01	33
1997-01-01	69
2002-01-01	137
2003-01-01	145
2004-01-01	169
2005-01-01	185
2006-01-01	167
2007-01-01	191
2008-01-01	195
2009-01-01	187
2010-01-01	207
2011-01-01	187
2012-01-01	186
2013-01-01	182
2014-01-01	179
2015-01-01	174
2016-01-01	180