Year	Number of Firms
1992-01-01	171
1997-01-01	294
2002-01-01	333
2003-01-01	344
2004-01-01	360
2005-01-01	374
2006-01-01	391
2007-01-01	416
2008-01-01	386
2009-01-01	359
2010-01-01	403
2011-01-01	426
2012-01-01	434
2013-01-01	468
2014-01-01	454
2015-01-01	461
2016-01-01	423