Month Number 1960-01-01 957 1960-02-01 1171 1960-03-01 1768 1960-04-01 2092 1960-05-01 2745 1960-06-01 2985 1960-07-01 2831 1960-08-01 2877 1960-09-01 2941 1960-10-01 3188 1960-11-01 2365 1960-12-01 2167 1961-01-01 1783 1961-02-01 1600 1961-03-01 1940 1961-04-01 2119 1961-05-01 2679 1961-06-01 3163 1961-07-01 2341 1961-08-01 2742 1961-09-01 3318 1961-10-01 2866 1961-11-01 2420 1961-12-01 1884 1962-01-01 1453 1962-02-01 1644 1962-03-01 1583 1962-04-01 2021 1962-05-01 3074 1962-06-01 2873 1962-07-01 1952 1962-08-01 4094 1962-09-01 3184 1962-10-01 3088 1962-11-01 2319 1962-12-01 2264 1963-01-01 1253 1963-02-01 1291 1963-03-01 1814 1963-04-01 1695 1963-05-01 3029 1963-06-01 2822 1963-07-01 2114 1963-08-01 2587 1963-09-01 2535 1963-10-01 2986 1963-11-01 2397 1963-12-01 1576 1964-01-01 1752 1964-02-01 1507 1964-03-01 1408 1964-04-01 2327 1964-05-01 2641 1964-06-01 3293 1964-07-01 2430 1964-08-01 2924 1964-09-01 3277 1964-10-01 2574 1964-11-01 2969 1964-12-01 1777 1965-01-01 1580 1965-02-01 1432 1965-03-01 1766 1965-04-01 2129 1965-05-01 3259 1965-06-01 3188 1965-07-01 3249 1965-08-01 3338 1965-09-01 2626 1965-10-01 2870 1965-11-01 2879 1965-12-01 1838 1966-01-01 1638 1966-02-01 1262 1966-03-01 1665 1966-04-01 1813 1966-05-01 3304 1966-06-01 4037 1966-07-01 2493 1966-08-01 3763 1966-09-01 3208 1966-10-01 3008 1966-11-01 2660 1966-12-01 1958 1967-01-01 1550 1967-02-01 2124 1967-03-01 1960 1967-04-01 2293 1967-05-01 3015 1967-06-01 3273 1967-07-01 2477 1967-08-01 3796 1967-09-01 4022 1967-10-01 3380 1967-11-01 2816 1967-12-01 4502 1968-01-01 1105 1968-02-01 1455 1968-03-01 1815 1968-04-01 1610 1968-05-01 2993 1968-06-01 3507 1968-07-01 2556 1968-08-01 3108 1968-09-01 3733 1968-10-01 3700 1968-11-01 2991 1968-12-01 2169 1969-01-01 1772 1969-02-01 2216 1969-03-01 2396 1969-04-01 2141 1969-05-01 3484 1969-06-01 3202 1969-07-01 3012 1969-08-01 3782 1969-09-01 4533 1969-10-01 4048 1969-11-01 3302 1969-12-01 3504 1970-01-01 2132 1970-02-01 1953 1970-03-01 2024 1970-04-01 2822 1970-05-01 3101 1970-06-01 3755 1970-07-01 3566 1970-08-01 3761 1970-09-01 4712 1970-10-01 5112 1970-11-01 3793 1970-12-01 3581 1971-01-01 2643 1971-02-01 2784 1971-03-01 2359 1971-04-01 2953 1971-05-01 3882 1971-06-01 4177 1971-07-01 3246 1971-08-01 4622 1971-09-01 5266 1971-10-01 4627 1971-11-01 4248 1971-12-01 3827 1972-01-01 2256 1972-02-01 2136 1972-03-01 2487 1972-04-01 2879 1972-05-01 4036 1972-06-01 4467 1972-07-01 3379 1972-08-01 4714 1972-09-01 4557 1972-10-01 4305 1972-11-01 4345 1972-12-01 3830 1973-01-01 2259 1973-02-01 3094 1973-03-01 2725 1973-04-01 3207 1973-05-01 3945 1973-06-01 3695 1973-07-01 2857 1973-08-01 4450 1973-09-01 3938 1973-10-01 5112 1973-11-01 5074 1973-12-01 2962 1974-01-01 2118 1974-02-01 2820 1974-03-01 3727 1974-04-01 3176 1974-05-01 3788 1974-06-01 4775 1974-07-01 3301 1974-08-01 4930 1974-09-01 4124 1974-10-01 4302 1974-11-01 3648 1974-12-01 3131 1975-01-01 2479 1975-02-01 2889 1975-03-01 2385 1975-04-01 4076 1975-05-01 4071 1975-06-01 4540 1975-07-01 3897 1975-08-01 4126 1975-09-01 4137 1975-10-01 4240 1975-11-01 3625 1975-12-01 3035 1976-01-01 2209 1976-02-01 2052 1976-03-01 3101 1976-04-01 2747 1976-05-01 3595 1976-06-01 4052 1976-07-01 3183 1976-08-01 4643 1976-09-01 4155 1976-10-01 4106 1976-11-01 3752 1976-12-01 2824 1977-01-01 1854 1977-02-01 1725 1977-03-01 2411 1977-04-01 2346 1977-05-01 4130 1977-06-01 4161 1977-07-01 3160 1977-08-01 4647 1977-09-01 4492 1977-10-01 4311 1977-11-01 3701 1977-12-01 2916 1978-01-01 2059 1978-02-01 2021 1978-03-01 1893 1978-04-01 2831 1978-05-01 3955 1978-06-01 3991 1978-07-01 3109 1978-08-01 4440 1978-09-01 4114 1978-10-01 4002 1978-11-01 3288 1978-12-01 2345 1979-01-01 1839 1979-02-01 1683 1979-03-01 2113 1979-04-01 2632 1979-05-01 4552 1979-06-01 5052 1979-07-01 2946 1979-08-01 5248 1979-09-01 3858 1979-10-01 4132 1979-11-01 3701 1979-12-01 2249 1980-01-01 2172 1980-02-01 1610 1980-03-01 1619 1980-04-01 2360 1980-05-01 3041 1980-06-01 2959 1980-07-01 3083 1980-08-01 4863 1980-09-01 3588 1980-10-01 3669 1980-11-01 3535 1980-12-01 3581 1981-01-01 1859 1981-02-01 1966 1981-03-01 2417 1981-04-01 2257 1981-05-01 3869 1981-06-01 3681 1981-07-01 3012 1981-08-01 4023 1981-09-01 3819 1981-10-01 3380 1981-11-01 3314 1981-12-01 2587 1982-01-01 1490 1982-02-01 2215 1982-03-01 3083 1982-04-01 2877 1982-05-01 3228 1982-06-01 3489 1982-07-01 2569 1982-08-01 3411 1982-09-01 3415 1982-10-01 3584 1982-11-01 2838 1982-12-01 5011 1983-01-01 1900 1983-02-01 1602 1983-03-01 1682 1983-04-01 2693 1983-05-01 3186 1983-06-01 3499 1983-07-01 3010 1983-08-01 3831 1983-09-01 3059 1983-10-01 2482 1983-11-01 2867 1983-12-01 1696 1984-01-01 1615 1984-02-01 1182 1984-03-01 1454 1984-04-01 1558 1984-05-01 2819 1984-06-01 2891 1984-07-01 2849 1984-08-01 2988 1984-09-01 2631 1984-10-01 2530 1984-11-01 2114 1984-12-01 1650 1985-01-01 1486 1985-02-01 1150 1985-03-01 1539 1985-04-01 1591 1985-05-01 2606 1985-06-01 3263 1985-07-01 2407 1985-08-01 3175 1985-09-01 2672 1985-10-01 2635 1985-11-01 2523 1985-12-01 1846 1986-01-01 1455 1986-02-01 1450 1986-03-01 1248 1986-04-01 2265 1986-05-01 3131 1986-06-01 2960 1986-07-01 2859 1986-08-01 3069 1986-09-01 3244 1986-10-01 3097 1986-11-01 2543 1986-12-01 1871 1987-01-01 1265 1987-02-01 1441 1987-03-01 1908 1987-04-01 1771 1987-05-01 2771 1987-06-01 2815 1987-07-01 2742 1987-08-01 2968 1987-09-01 3132 1987-10-01 3331 1987-11-01 2907 1987-12-01 2064 1988-01-01 2073 1988-02-01 2143 1988-03-01 1707 1988-04-01 1989 1988-05-01 2413 1988-06-01 2597 1988-07-01 2162 1988-08-01 2978 1988-09-01 2583 1988-10-01 2444 1988-11-01 2938 1988-12-01 2120 1989-01-01 1636 1989-02-01 1812 1989-03-01 1542 1989-04-01 1750 1989-05-01 2362 1989-06-01 3038 1989-07-01 2498 1989-08-01 2154 1989-09-01 2563 1989-10-01 2852 1989-11-01 2211 1989-12-01 1794 1990-01-01 1817 1990-02-01 1867 1990-03-01 1604 1990-04-01 1398 1990-05-01 1859 1990-06-01 1830 1990-07-01 1623 1990-08-01 2190 1990-09-01 2138 1990-10-01 2455 1990-11-01 1703 1990-12-01 1346 1991-01-01 1452 1991-02-01 1531 1991-03-01 1277 1991-04-01 1481 1991-05-01 1365 1991-06-01 1297 1991-07-01 1439 1991-08-01 1406 1991-09-01 1575 1991-10-01 1964 1991-11-01 1238 1991-12-01 1236 1992-01-01 1181 1992-02-01 1138 1992-03-01 1247 1992-04-01 1252 1992-05-01 1256 1992-06-01 1610 1992-07-01 1330 1992-08-01 1533 1992-09-01 1431 1992-10-01 1471 1992-11-01 1118 1992-12-01 1033 1993-01-01 1072 1993-02-01 967 1993-03-01 1011 1993-04-01 915 1993-05-01 1093 1993-06-01 1126 1993-07-01 1393 1993-08-01 1400 1993-09-01 1654 1993-10-01 1684 1993-11-01 2057 1993-12-01 1516 1994-01-01 1417 1994-02-01 1149 1994-03-01 1288 1994-04-01 1422 1994-05-01 1680 1994-06-01 1810 1994-07-01 1622 1994-08-01 2173 1994-09-01 1939 1994-10-01 2279 1994-11-01 2222 1994-12-01 1976 1995-01-01 1783 1995-02-01 1290 1995-03-01 986 1995-04-01 1449 1995-05-01 1644 1995-06-01 1760 1995-07-01 1464 1995-08-01 1892 1995-09-01 1733 1995-10-01 2371 1995-11-01 2074 1995-12-01 1275 1996-01-01 1196 1996-02-01 1063 1996-03-01 920 1996-04-01 1298 1996-05-01 1549 1996-06-01 1812 1996-07-01 1337 1996-08-01 1732 1996-09-01 1799 1996-10-01 2167 1996-11-01 1503 1996-12-01 1892 1997-01-01 1527 1997-02-01 1288 1997-03-01 1330 1997-04-01 1896 1997-05-01 1546 1997-06-01 1721 1997-07-01 1586 1997-08-01 1987 1997-09-01 2057 1997-10-01 2210 1997-11-01 2087 1997-12-01 1545 1998-01-01 1365 1998-02-01 1884 1998-03-01 1529 1998-04-01 1721 1998-05-01 1370 1998-06-01 1272 1998-07-01 1467 1998-08-01 1450 1998-09-01 1612 1998-10-01 2101 1998-11-01 1886 1998-12-01 1723 1999-01-01 1375 1999-02-01 991 1999-03-01 1353 1999-04-01 1459 1999-05-01 1313 1999-06-01 1948 1999-07-01 1374 1999-08-01 2044 1999-09-01 2268 1999-10-01 1870 1999-11-01 2153 1999-12-01 2156 2000-01-01 2117 2000-02-01 1914 2000-03-01 2057 2000-04-01 1090 2000-05-01 1520 2000-06-01 1751 2000-07-01 1336 2000-08-01 2020 2000-09-01 2703 2000-10-01 2481 2000-11-01 2382 2000-12-01 2089 2001-01-01 2486 2001-02-01 2041 2001-03-01 2230 2001-04-01 1608 2001-05-01 1830 2001-06-01 2133 2001-07-01 1883 2001-08-01 2160 2001-09-01 2472 2001-10-01 2281 2001-11-01 2328 2001-12-01 1637 2002-01-01 2152 2002-02-01 2126 2002-03-01 1668 2002-04-01 1607 2002-05-01 1541 2002-06-01 1883 2002-07-01 1058 2002-08-01 2027 2002-09-01 2418 2002-10-01 2062 2002-11-01 2281 2002-12-01 1611 2003-01-01 2604 2003-02-01 1390 2003-03-01 1920 2003-04-01 1220 2003-05-01 1372 2003-06-01 2148 2003-07-01 1318 2003-08-01 1983 2003-09-01 2019 2003-10-01 2671 2003-11-01 1944 2003-12-01 1898 2004-01-01 2186 2004-02-01 2346 2004-03-01 1291 2004-04-01 2295 2004-05-01 2188 2004-06-01 3537 2004-07-01 1768 2004-08-01 2775 2004-09-01 2235 2004-10-01 3772 2004-11-01 2916 2004-12-01 2157 2005-01-01 3179 2005-02-01 2453 2005-03-01 1727 2005-04-01 2997 2005-05-01 2719 2005-06-01 1836 2005-07-01 1689 2005-08-01 2469 2005-09-01 2424 2005-10-01 3284 2005-11-01 3677 2005-12-01 3154 2006-01-01 2907 2006-02-01 2101 2006-03-01 3338 2006-04-01 2508 2006-05-01 2065 2006-06-01 2980 2006-07-01 1520 2006-08-01 2451 2006-09-01 2540 2006-10-01 3582 2006-11-01 3111 2006-12-01 3659 2007-01-01 3625 2007-02-01 2454 2007-03-01 2189 2007-04-01 3057 2007-05-01 2448 2007-06-01 2709 2007-07-01 1497 2007-08-01 2699 2007-09-01 2889 2007-10-01 3179 2007-11-01 3674 2007-12-01 1982 2008-01-01 2679 2008-02-01 1967 2008-03-01 1859 2008-04-01 1786 2008-05-01 2149 2008-06-01 2512 2008-07-01 1114 2008-08-01 2358 2008-09-01 2655 2008-10-01 2244 2008-11-01 3007 2008-12-01 1587 2009-01-01 2383 2009-02-01 1586 2009-03-01 1571 2009-04-01 1193 2009-05-01 1656 2009-06-01 1502 2009-07-01 761 2009-08-01 1655 2009-09-01 1903 2009-10-01 2017 2009-11-01 2062 2009-12-01 1287 2010-01-01 2325 2010-02-01 1748 2010-03-01 1377 2010-04-01 1697 2010-05-01 1305 2010-06-01 1539 2010-07-01 1295 2010-08-01 1637 2010-09-01 1927 2010-10-01 2072 2010-11-01 2777 2010-12-01 1579 2011-01-01 3051 2011-02-01 2125 2011-03-01 2643 2011-04-01 2583 2011-05-01 2118 2011-06-01 1943 2011-07-01 1706 2011-08-01 2052 2011-09-01 2130 2011-10-01 3000 2011-11-01 2551 2011-12-01 1833 2012-01-01 2509 2012-02-01 1785 2012-03-01 2471 2012-04-01 2114 2012-05-01 2425 2012-06-01 2902 2012-07-01 2133 2012-08-01 2712 2012-09-01 3288 2012-10-01 2641 2012-11-01 2928 2012-12-01 2234 2013-01-01 2972 2013-02-01 2815 2013-03-01 2106 2013-04-01 2415 2013-05-01 2017 2013-06-01 2464 2013-07-01 1612 2013-08-01 2538 2013-09-01 2833 2013-10-01 2899 2013-11-01 3065 2013-12-01 2516 2014-01-01 1837 2014-02-01 1884 2014-03-01 2425 2014-04-01 1643 2014-05-01 3224 2014-06-01 2734 2014-07-01 2234 2014-08-01 2162 2014-09-01 1771 2014-10-01 2703 2014-11-01 2672 2014-12-01 1841 2015-01-01 2479 2015-02-01 1828 2015-03-01 2916 2015-04-01 2681 2015-05-01 2360 2015-06-01 2688 2015-07-01 1930 2015-08-01 2480 2015-09-01 2709 2015-10-01 3649 2015-11-01 2976 2015-12-01 2231 2016-01-01 2498 2016-02-01 2497 2016-03-01 2679 2016-04-01 2990 2016-05-01 2977 2016-06-01 3808 2016-07-01 2215 2016-08-01 3340 2016-09-01 3228 2016-10-01 3359 2016-11-01 3806 2016-12-01 3133 2017-01-01 3062 2017-02-01 2608 2017-03-01 3554 2017-04-01 2934 2017-05-01 2424 2017-06-01 4138 2017-07-01 3114 2017-08-01 2286 2017-09-01 3036 2017-10-01 2882 2017-11-01 2820 2017-12-01 2436 2018-01-01 2648 2018-02-01 2368 2018-03-01 2315 2018-04-01 2480 2018-05-01 2181 2018-06-01 2396 2018-07-01 2570 2018-08-01 3004 2018-09-01 2536