Year	Number of Firms
1992-01-01	133
1997-01-01	219
2002-01-01	272
2003-01-01	245
2004-01-01	261
2005-01-01	293
2006-01-01	322
2007-01-01	400
2008-01-01	436
2009-01-01	390
2010-01-01	431
2011-01-01	467
2012-01-01	521
2013-01-01	484
2014-01-01	506
2015-01-01	493
2016-01-01	465