Year	Number of Firms
1992-01-01	293
1997-01-01	474
2002-01-01	279
2003-01-01	330
2004-01-01	382
2005-01-01	438
2006-01-01	445
2007-01-01	472
2008-01-01	524
2009-01-01	474
2010-01-01	529
2011-01-01	539
2012-01-01	494
2013-01-01	508
2014-01-01	484
2015-01-01	460
2016-01-01	485