Year	Number of Firms
1992-01-01	117
1997-01-01	178
2002-01-01	223
2003-01-01	237
2004-01-01	225
2005-01-01	214
2006-01-01	257
2007-01-01	266
2008-01-01	269
2009-01-01	216
2010-01-01	199
2011-01-01	236
2012-01-01	230
2013-01-01	207
2014-01-01	215
2015-01-01	218
2016-01-01	215