Year	Number of Firms
1992-01-01	146
1997-01-01	172
2002-01-01	169
2003-01-01	167
2004-01-01	173
2005-01-01	180
2006-01-01	178
2007-01-01	215
2008-01-01	231
2009-01-01	198
2010-01-01	187
2011-01-01	186
2012-01-01	182
2013-01-01	172
2014-01-01	196
2015-01-01	170
2016-01-01	164