Year	Number of Firms
1992-01-01	234
1997-01-01	332
2002-01-01	422
2003-01-01	424
2004-01-01	430
2005-01-01	441
2006-01-01	425
2007-01-01	500
2008-01-01	489
2009-01-01	490
2010-01-01	551
2011-01-01	517
2012-01-01	541
2013-01-01	575
2014-01-01	596
2015-01-01	587
2016-01-01	586