Year	Number of Firms
1992-01-01	229
1997-01-01	350
2002-01-01	348
2003-01-01	360
2004-01-01	344
2005-01-01	352
2006-01-01	340
2007-01-01	390
2008-01-01	424
2009-01-01	388
2010-01-01	433
2011-01-01	449
2012-01-01	447
2013-01-01	462
2014-01-01	456
2015-01-01	464
2016-01-01	420