Year	Number of Firms
1992-01-01	88
1997-01-01	216
2002-01-01	237
2003-01-01	236
2004-01-01	264
2005-01-01	300
2006-01-01	298
2007-01-01	337
2008-01-01	365
2009-01-01	305
2010-01-01	291
2011-01-01	298
2012-01-01	268
2013-01-01	269
2014-01-01	291
2015-01-01	290
2016-01-01	290