Year	Number of Firms
1992-01-01	76
1997-01-01	134
2002-01-01	156
2003-01-01	145
2004-01-01	143
2005-01-01	174
2006-01-01	185
2007-01-01	221
2008-01-01	223
2009-01-01	218
2010-01-01	237
2011-01-01	272
2012-01-01	270
2013-01-01	280
2014-01-01	302
2015-01-01	272
2016-01-01	250