a    Projected estimate (medium fertility variant).
b    2015.
c    2016.
d    Data classified according to ISIC Rev. 4.
e    Estimate.
f    Break in the time series.
g    2014.
h    Data refers to a 5-year period preceding the reference year.
i    Including refugees.
j    Data as at the end of December.
k    Data revision.
l    2004.
m    2013.
n    2006.
o    2011.
p    Overestimated or based on overestimated data.
q    S&T budget instead of R&D expenditure.
r    2002.
s    Excluding business enterprise.
t    The data of all the border posts of the country are used.