Year	Number of Firms
1992-01-01	52
1997-01-01	134
2002-01-01	134
2003-01-01	144
2004-01-01	157
2005-01-01	172
2006-01-01	153
2007-01-01	157
2008-01-01	195
2009-01-01	204
2010-01-01	204
2011-01-01	238
2012-01-01	195
2013-01-01	199
2014-01-01	224
2015-01-01	228
2016-01-01	252