Year	Number of Firms
1992-01-01	65
1997-01-01	94
2002-01-01	122
2003-01-01	124
2004-01-01	160
2005-01-01	171
2006-01-01	173
2007-01-01	179
2008-01-01	223
2009-01-01	223
2010-01-01	257
2011-01-01	275
2012-01-01	245
2013-01-01	248
2014-01-01	231
2015-01-01	240
2016-01-01	253