Year	Number of Firms
1992-01-01	189
1997-01-01	380
2002-01-01	519
2003-01-01	491
2004-01-01	502
2005-01-01	520
2006-01-01	517
2007-01-01	563
2008-01-01	579
2009-01-01	490
2010-01-01	499
2011-01-01	483
2012-01-01	492
2013-01-01	533
2014-01-01	529
2015-01-01	497
2016-01-01	497