Year	Number of Firms
1992-01-01	121
1997-01-01	177
2002-01-01	162
2003-01-01	168
2004-01-01	153
2005-01-01	162
2006-01-01	168
2007-01-01	177
2008-01-01	177
2009-01-01	172
2010-01-01	196
2011-01-01	215
2012-01-01	195
2013-01-01	216
2014-01-01	204
2015-01-01	183
2016-01-01	186