Year	Number of Firms
1992-01-01	88
1997-01-01	106
2002-01-01	168
2003-01-01	167
2004-01-01	178
2005-01-01	248
2006-01-01	270
2007-01-01	240
2008-01-01	316
2009-01-01	398
2010-01-01	446
2011-01-01	422
2012-01-01	450
2013-01-01	468
2014-01-01	471
2015-01-01	438
2016-01-01	423