For example, since the 1980s, the median income in the United States has increased more slowly than the arithmetic average of income.
fɔːɹ ɛɡzˈæmpəl, sˈɪns ðə nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi z, ðə mˈiːdiːən ˈɪŋkʌm ɪnðə juːnˈaɪɾᵻd stˈeɪts hɐz ɪŋkɹˈiːst mˈoːɹ slˈoʊli ðɐn ðɪ ɚɹˈɪθmətˌɪk ˈævɹɪdʒ ʌv ˈɪŋkʌm.