Year	Number of Firms
1992-01-01	73
1997-01-01	133
2002-01-01	136
2003-01-01	148
2004-01-01	158
2005-01-01	166
2006-01-01	179
2007-01-01	180
2008-01-01	221
2009-01-01	193
2010-01-01	225
2011-01-01	233
2012-01-01	239
2013-01-01	246
2014-01-01	262
2015-01-01	272
2016-01-01	246