Over time, a combination of labour supply and labour demand trends have driven down the share of population employed in agriculture.
ˌoʊvɚ tˈaɪm, ɐ kˌɑːmbᵻnˈeɪʃən ʌv lˈeɪbɚ səplˈaɪ ænd lˈeɪbɚ dᵻmˈænd tɹˈɛndz hæv dɹˈɪvən dˌaʊn ðə ʃˈɛɹ ʌv pˌɑːpjʊlˈeɪʃən ɛmplˈɔɪd ɪn ˈæɡɹɪkˌʌltʃɚ.