Year	Number of Firms
1992-01-01	54
1997-01-01	122
2002-01-01	144
2003-01-01	158
2004-01-01	151
2005-01-01	150
2006-01-01	150
2007-01-01	173
2008-01-01	172
2009-01-01	154
2010-01-01	145
2011-01-01	161
2012-01-01	164
2013-01-01	185
2014-01-01	190
2015-01-01	181
2016-01-01	188