Year	Number of Firms
1992-01-01	152
1997-01-01	180
2002-01-01	188
2003-01-01	221
2004-01-01	250
2005-01-01	230
2006-01-01	224
2007-01-01	251
2008-01-01	286
2009-01-01	246
2010-01-01	262
2011-01-01	241
2012-01-01	240
2013-01-01	228
2014-01-01	242
2015-01-01	243
2016-01-01	243