Year	Number of Firms
1992-01-01	73
1997-01-01	139
2002-01-01	186
2003-01-01	176
2004-01-01	209
2005-01-01	244
2006-01-01	224
2007-01-01	262
2008-01-01	258
2009-01-01	264
2010-01-01	274
2011-01-01	307
2012-01-01	274
2013-01-01	300
2014-01-01	296
2015-01-01	310
2016-01-01	297