Well the 2017 figures look pretty accurate to me !
p.s. I didn't bother with other years...
Amended, when I first did 2017 - 2018 I must have hit the minus button for office costs.
I'd have been quicker not using the computer's calculator.
I checked them all & they were all more or less spot on.
2010 - 2011 £ 128,554.65 £128,607
2011 - 2012 £ 139,654.15 £139,782
2012 - 2013 £ 154,529.49 £154,532
2013 - 2014 £ 181,473.86 £182,709
2014 - 2015 £ 181,924.97 £182,053
2015 - 2016 £ 197,938.76 £197,977
2016 - 2017 £ 202,794.80 £203,561
2017 - 2018 £ 195,405.57 £195,455