Year	Number of Firms
1992-01-01	1942
1997-01-01	3231
2002-01-01	3236
2003-01-01	3234
2004-01-01	3233
2005-01-01	3454
2006-01-01	3821
2007-01-01	4169
2008-01-01	4315
2009-01-01	4088
2010-01-01	4372
2011-01-01	4776
2012-01-01	4585
2013-01-01	4437
2014-01-01	4617
2015-01-01	4495
2016-01-01	4471