Year	Number of Firms
1992-01-01	364
1997-01-01	444
2002-01-01	442
2003-01-01	463
2004-01-01	490
2005-01-01	510
2006-01-01	526
2007-01-01	551
2008-01-01	587
2009-01-01	522
2010-01-01	569
2011-01-01	569
2012-01-01	587
2013-01-01	559
2014-01-01	577
2015-01-01	570
2016-01-01	573