Year	Number of Firms
1992-01-01	136
1997-01-01	232
2002-01-01	264
2003-01-01	252
2004-01-01	259
2005-01-01	317
2006-01-01	317
2007-01-01	332
2008-01-01	382
2009-01-01	354
2010-01-01	438
2011-01-01	526
2012-01-01	587
2013-01-01	579
2014-01-01	533
2015-01-01	542
2016-01-01	552