Year	Number of Firms
1992-01-01	181
1997-01-01	225
2002-01-01	230
2003-01-01	230
2004-01-01	247
2005-01-01	270
2006-01-01	265
2007-01-01	312
2008-01-01	350
2009-01-01	344
2010-01-01	349
2011-01-01	359
2012-01-01	383
2013-01-01	358
2014-01-01	366
2015-01-01	375
2016-01-01	355