Year	Number of Firms
1992-01-01	97
1997-01-01	153
2002-01-01	185
2003-01-01	154
2004-01-01	179
2005-01-01	181
2006-01-01	199
2007-01-01	223
2008-01-01	233
2009-01-01	245
2010-01-01	254
2011-01-01	282
2012-01-01	284
2013-01-01	279
2014-01-01	288
2015-01-01	285
2016-01-01	331