Year	Number of Firms
1992-01-01	159
1997-01-01	275
2002-01-01	260
2003-01-01	313
2004-01-01	318
2005-01-01	308
2006-01-01	313
2007-01-01	330
2008-01-01	360
2009-01-01	319
2010-01-01	371
2011-01-01	393
2012-01-01	421
2013-01-01	430
2014-01-01	438
2015-01-01	430
2016-01-01	400