Year	Number of Firms
1992-01-01	76
1997-01-01	181
2002-01-01	198
2003-01-01	204
2004-01-01	186
2005-01-01	186
2006-01-01	206
2007-01-01	233
2008-01-01	256
2009-01-01	250
2010-01-01	296
2011-01-01	317
2012-01-01	307
2013-01-01	328
2014-01-01	295
2015-01-01	295
2016-01-01	309