Year	Number of Firms
1992-01-01	153
1997-01-01	232
2002-01-01	280
2003-01-01	351
2004-01-01	384
2005-01-01	385
2006-01-01	406
2007-01-01	482
2008-01-01	489
2009-01-01	529
2010-01-01	512
2011-01-01	606
2012-01-01	565
2013-01-01	546
2014-01-01	624
2015-01-01	601
2016-01-01	603