Year	Number of Firms
1992-01-01	21
1997-01-01	59
2002-01-01	114
2003-01-01	130
2004-01-01	160
2005-01-01	190
2006-01-01	223
2007-01-01	229
2008-01-01	225
2009-01-01	238
2010-01-01	212
2011-01-01	222
2012-01-01	229
2013-01-01	236
2014-01-01	257
2015-01-01	240
2016-01-01	210