Year | Average Path Length | Clustering Efficient | Year | Average Path Length | Clustering Efficient |
2001 | 1.671013883 | 0.943844369 | 2010 | 1.664983 | 0.946839 |
2002 | 1.66933109 | 0.944938077 | 2011 | 1.666128 | 0.946299 |
2003 | 1.669427609 | 0.945790851 | 2012 | 1.665522 | 0.946034 |
2004 | 1.668080808 | 0.946033779 | 2013 | 1.66633 | 0.945758 |
2005 | 1.667474747 | 0.946033779 | 2014 | 1.66835 | 0.943769 |
2006 | 1.667138047 | 0.946839142 | 2015 | 1.66734 | 0.943769 |
2007 | 1.665454545 | 0.946033779 | 2016 | 1.668081 | 0.944036 |
2008 | 1.665723906 | 0.946574076 | 2017 | 1.667744 | 0.944281 |
2009 | 1.665656566 | 0.946574076 | 2018 | 1.667823 | 0.944421 |