Year	Number of Firms
1992-01-01	179
1997-01-01	239
2002-01-01	368
2003-01-01	334
2004-01-01	353
2005-01-01	341
2006-01-01	388
2007-01-01	407
2008-01-01	397
2009-01-01	361
2010-01-01	386
2011-01-01	454
2012-01-01	505
2013-01-01	518
2014-01-01	471
2015-01-01	554
2016-01-01	486