Year	Number of Firms
1992-01-01	75
1997-01-01	125
2002-01-01	183
2003-01-01	226
2004-01-01	246
2005-01-01	238
2006-01-01	260
2007-01-01	308
2008-01-01	399
2009-01-01	376
2010-01-01	388
2011-01-01	428
2012-01-01	440
2013-01-01	505
2014-01-01	502
2015-01-01	448
2016-01-01	398