19. The table below shows hypothetical values, in billions of dollars, of different forms of money.
a. Use the table to calculate the M1 and M2 money supplies for each year, as well as the growth rates of the M1 and M2 money supplies from the previous year.
b. Why are the growth rates of M1 and M2 so different? Explain.
| 2019 | 2020 | 2021 | 2022 |
Currency | 880 | 895 | 900 | 906 |
Money market mutual fund shares | 680 | 685 | 683 | 692 |
Saving account deposits | 5,500 | 5,780 | 5,968 | 6,105 |
Money market deposit accounts | 1,214 | 1,245 | 1,274 | 1,329 |
Demand and checkable deposits | 1,000 | 972 | 980 | 993 |
Small denomination time deposits | 840 | 871 | 1,133 | 1,576 |
Traveler's check | 5 | 5 | 4 | 3 |
3-month treasury bills | 1,986 | 2,374 | 2,436 | 2,502 |