Year	Number of Firms
1992-01-01	94
1997-01-01	160
2002-01-01	178
2003-01-01	190
2004-01-01	206
2005-01-01	206
2006-01-01	224
2007-01-01	237
2008-01-01	228
2009-01-01	225
2010-01-01	232
2011-01-01	229
2012-01-01	233
2013-01-01	233
2014-01-01	239
2015-01-01	243
2016-01-01	245