Year	Number of Firms
1992-01-01	174
1997-01-01	292
2002-01-01	258
2003-01-01	259
2004-01-01	283
2005-01-01	319
2006-01-01	314
2007-01-01	327
2008-01-01	393
2009-01-01	361
2010-01-01	408
2011-01-01	449
2012-01-01	449
2013-01-01	446
2014-01-01	470
2015-01-01	471
2016-01-01	465