Year	Number of Firms
1992-01-01	160
1997-01-01	270
2002-01-01	260
2003-01-01	280
2004-01-01	291
2005-01-01	301
2006-01-01	319
2007-01-01	397
2008-01-01	430
2009-01-01	441
2010-01-01	454
2011-01-01	482
2012-01-01	506
2013-01-01	518
2014-01-01	474
2015-01-01	459
2016-01-01	473