Year	Number of Firms
1992-01-01	337
1997-01-01	391
2002-01-01	432
2003-01-01	465
2004-01-01	468
2005-01-01	491
2006-01-01	505
2007-01-01	570
2008-01-01	587
2009-01-01	548
2010-01-01	554
2011-01-01	580
2012-01-01	557
2013-01-01	535
2014-01-01	556
2015-01-01	578
2016-01-01	571