Year	Number of Firms
1992-01-01	67
1997-01-01	141
2002-01-01	141
2003-01-01	155
2004-01-01	155
2005-01-01	142
2006-01-01	165
2007-01-01	159
2008-01-01	168
2009-01-01	152
2010-01-01	153
2011-01-01	163
2012-01-01	153
2013-01-01	159
2014-01-01	155
2015-01-01	169
2016-01-01	162