Year	Number of Firms
1992-01-01	156
1997-01-01	208
2002-01-01	232
2003-01-01	236
2004-01-01	249
2005-01-01	255
2006-01-01	272
2007-01-01	300
2008-01-01	332
2009-01-01	349
2010-01-01	375
2011-01-01	377
2012-01-01	370
2013-01-01	369
2014-01-01	353
2015-01-01	358
2016-01-01	360