S Sigma Force

2004 • 78 Readers • 480 pages • 3.7

2004 • 53 Readers • 560 pages • 4.2

2006 • 32 Readers • 421 pages • 4.1

2007 • 29 Readers • 4.4

2008 • 25 Readers • 4.4

2009 • 24 Readers • 4

2011 • 27 Readers • 3.9

2012 • 31 Readers • 4

2013 • 27 Readers • 3.9

2014 • 2 Readers • 426 pages • 3

2016 • 22 Readers • 448 pages • 4

2017 • 21 Readers • 448 pages • 4.2

2019 • 20 Readers • 4.1

1 Reader

2020 • 15 Readers • 624 pages • 4.4

2021 • 15 Readers • 448 pages • 3.3

2023 • 11 Readers • 448 pages • 4.3