Year	Number of Firms
1992-01-01	76
1997-01-01	137
2002-01-01	163
2003-01-01	156
2004-01-01	175
2005-01-01	174
2006-01-01	181
2007-01-01	220
2008-01-01	232
2009-01-01	210
2010-01-01	225
2011-01-01	271
2012-01-01	240
2013-01-01	233
2014-01-01	248
2015-01-01	257
2016-01-01	263