Year	Number of Firms
1992-01-01	54
1997-01-01	137
2002-01-01	175
2003-01-01	173
2004-01-01	207
2005-01-01	222
2006-01-01	214
2007-01-01	224
2008-01-01	250
2009-01-01	229
2010-01-01	253
2011-01-01	277
2012-01-01	250
2013-01-01	269
2014-01-01	258
2015-01-01	235
2016-01-01	239