Year	Number of Firms
1992-01-01	51
1997-01-01	82
2002-01-01	97
2003-01-01	117
2004-01-01	117
2005-01-01	131
2006-01-01	129
2007-01-01	137
2008-01-01	170
2009-01-01	124
2010-01-01	168
2011-01-01	166
2012-01-01	174
2013-01-01	166
2014-01-01	168
2015-01-01	165
2016-01-01	170