Year	Number of Firms
1992-01-01	147
1997-01-01	148
2002-01-01	139
2003-01-01	155
2004-01-01	151
2005-01-01	158
2006-01-01	161
2007-01-01	161
2008-01-01	163
2009-01-01	141
2010-01-01	146
2011-01-01	146
2012-01-01	154
2013-01-01	155
2014-01-01	168
2015-01-01	159
2016-01-01	140