Year	Number of Firms
1992-01-01	326
1997-01-01	365
2002-01-01	456
2003-01-01	454
2004-01-01	468
2005-01-01	496
2006-01-01	502
2007-01-01	591
2008-01-01	606
2009-01-01	563
2010-01-01	563
2011-01-01	624
2012-01-01	623
2013-01-01	625
2014-01-01	642
2015-01-01	648
2016-01-01	643