Year	Number of Firms
1992-01-01	156
1997-01-01	255
2002-01-01	210
2003-01-01	207
2004-01-01	218
2005-01-01	253
2006-01-01	266
2007-01-01	347
2008-01-01	364
2009-01-01	353
2010-01-01	375
2011-01-01	338
2012-01-01	344
2013-01-01	335
2014-01-01	343
2015-01-01	340
2016-01-01	318