+-------+----------+--------------+--------------+------------------+-----------+
|  Year | Research | Non-research | Research Avg | Not-research Avg | Total Avg |
+-------+----------+--------------+--------------+------------------+-----------+
|  1995 |  363007  |    85576     |    3.8849    |      2.0349      |   3.5320  |
|  1996 |  370198  |    87896     |    4.0317    |      2.0976      |   3.6606  |
|  1997 |  363577  |    92127     |    4.1102    |      2.0864      |   3.7011  |
|  1998 |  378481  |    95424     |    4.1766    |      2.0980      |   3.7581  |
|  1999 |  390468  |    102615    |    4.2272    |      2.0834      |   3.7811  |
|  2000 |  421771  |    107840    |    4.2740    |      2.1196      |   3.8353  |
|  2001 |  429734  |    113286    |    4.4378    |      2.1117      |   3.9525  |
|  2002 |  439721  |    118445    |    4.5258    |      2.1878      |   4.0297  |
|  2003 |  457320  |    126100    |    4.6535    |      2.2453      |   4.1330  |
|  2004 |  487038  |    132345    |    4.7827    |      2.3123      |   4.2549  |
|  2005 |  521093  |    134582    |    4.8916    |      2.3505      |   4.3700  |
|  2006 |  545681  |    138391    |    4.9606    |      2.4008      |   4.4427  |
|  2007 |  569964  |    139565    |    5.0582    |      2.4892      |   4.5529  |
|  2008 |  606463  |    143759    |    5.1299    |      2.5105      |   4.6280  |
|  2009 |  638608  |    144718    |    5.2028    |      2.5767      |   4.7176  |
|  2010 |  672589  |    149643    |    5.3194    |      2.6699      |   4.8372  |
|  2011 |  718523  |    156326    |    5.4893    |      2.7427      |   4.9985  |
|  2012 |  775637  |    163479    |    5.6627    |      2.8384      |   5.1710  |
|  2013 |  811789  |    181971    |    5.7698    |      2.9523      |   5.2539  |
|  2014 |  845090  |    195823    |    5.8954    |      3.0620      |   5.3624  |
|  2015 |  878182  |    209943    |    6.0838    |      3.2217      |   5.5316  |
|  2016 |  896432  |    209084    |    6.2214    |      3.4351      |   5.6945  |
|  2017 |  935012  |    189792    |    6.2433    |      3.6815      |   5.8111  |
|  2018 |  927277  |    123246    |    6.1820    |      3.8971      |   5.9139  |
| Total | 14444982 |   3342034    |    5.2915    |      2.6970      |   4.8040  |
+-------+----------+--------------+--------------+------------------+-----------+