Year	Number of Firms
1997-01-01	129
2002-01-01	166
2003-01-01	184
2004-01-01	208
2005-01-01	225
2006-01-01	234
2007-01-01	274
2008-01-01	289
2009-01-01	255
2010-01-01	264
2011-01-01	310
2012-01-01	324
2013-01-01	322
2014-01-01	310
2015-01-01	316
2016-01-01	334