Year	Number of Firms
1992-01-01	88
1997-01-01	151
2002-01-01	149
2003-01-01	160
2004-01-01	185
2005-01-01	190
2006-01-01	193
2007-01-01	198
2008-01-01	219
2009-01-01	170
2010-01-01	211
2011-01-01	228
2012-01-01	242
2013-01-01	272
2014-01-01	250
2015-01-01	241
2016-01-01	243