Year	Number of Firms
1992-01-01	251
1997-01-01	377
2002-01-01	399
2003-01-01	405
2004-01-01	403
2005-01-01	420
2006-01-01	457
2007-01-01	462
2008-01-01	502
2009-01-01	495
2010-01-01	557
2011-01-01	596
2012-01-01	569
2013-01-01	569
2014-01-01	550
2015-01-01	552
2016-01-01	511