Year	Number of Firms
1992-01-01	143
1997-01-01	215
2002-01-01	233
2003-01-01	231
2004-01-01	246
2005-01-01	236
2006-01-01	235
2007-01-01	245
2008-01-01	261
2009-01-01	255
2010-01-01	243
2011-01-01	242
2012-01-01	252
2013-01-01	240
2014-01-01	251
2015-01-01	245
2016-01-01	237