Year	Number of Firms
1992-01-01	216
1997-01-01	343
2002-01-01	385
2003-01-01	417
2004-01-01	480
2005-01-01	440
2006-01-01	440
2007-01-01	507
2008-01-01	494
2009-01-01	464
2010-01-01	491
2011-01-01	465
2012-01-01	486
2013-01-01	479
2014-01-01	450
2015-01-01	456
2016-01-01	445