Year	Number of Firms
1992-01-01	178
1997-01-01	328
2002-01-01	320
2003-01-01	358
2004-01-01	427
2005-01-01	446
2006-01-01	466
2007-01-01	494
2008-01-01	535
2009-01-01	488
2010-01-01	572
2011-01-01	604
2012-01-01	620
2013-01-01	606
2014-01-01	637
2015-01-01	621
2016-01-01	580