  Over the past century, the Turkish language has undergone substantial
changes, primarily driven by governmental interventions. In this work, our goal
is to investigate the evolution of the Turkish language since the establishment
of T\"urkiye in 1923. Thus, we first introduce Turkronicles which is a
diachronic corpus for Turkish derived from the Official Gazette of T\"urkiye.
Turkronicles contains 45,375 documents, detailing governmental actions, making
it a pivotal resource for analyzing the linguistic evolution influenced by the
state policies. In addition, we expand an existing diachronic Turkish corpus
which consists of the records of the Grand National Assembly of T\"urkiye by
covering additional years. Next, combining these two diachronic corpora, we
seek answers for two main research questions: How have the Turkish vocabulary
and the writing conventions changed since the 1920s? Our analysis reveals that
the vocabularies of two different time periods diverge more as the time between
them increases, and newly coined Turkish words take the place of their old
counterparts. We also observe changes in writing conventions. In particular,
the use of circumflex noticeably decreases and words ending with the letters
"-b" and "-d" are successively replaced with "-p" and "-t" letters,
respectively. Overall, this study quantitatively highlights the dramatic
changes in Turkish from various aspects of the language in a diachronic
perspective.
