Year	Measure
1500	1992
1501	1986
1502	1980
1503	1974
1504	1968
1505	1963
1506	1957
1507	1951
1508	1945
1509	1940
1510	1934
1511	1928
1512	1923
1513	1917
1514	1911
1515	1906
1516	1900
1517	1895
1518	1889
1519	1883
1520	1878
1521	1872
1522	1867
1523	1861
1524	1856
1525	1850
1526	1845
1527	1840
1528	1834
1529	1829
1530	1823
1531	1818
1532	1813
1533	1807
1534	1802
1535	1797
1536	1792
1537	1786
1538	1781
1539	1776
1540	1771
1541	1765
1542	1760
1543	1755
1544	1750
1545	1745
1546	1740
1547	1734
1548	1729
1549	1724
1550	1719
1551	1714
1552	1709
1553	1704
1554	1699
1555	1694
1556	1689
1557	1684
1558	1679
1559	1674
1560	1669
1561	1665
1562	1660
1563	1655
1564	1650
1565	1645
1566	1640
1567	1635
1568	1631
1569	1626
1570	1621
1571	1616
1572	1612
1573	1607
1574	1602
1575	1597
1576	1593
1577	1588
1578	1583
1579	1579
1580	1574
1581	1569
1582	1565
1583	1560
1584	1556
1585	1551
1586	1547
1587	1542
1588	1537
1589	1533
1590	1528
1591	1524
1592	1519
1593	1515
1594	1511
1595	1506
1596	1502
1597	1497
1598	1493
1599	1488
1600	1484
1601	1491
1602	1498
1603	1505
1604	1513
1605	1520
1606	1527
1607	1534
1608	1542
1609	1549
1610	1556
1611	1564
1612	1571
1613	1579
1614	1586
1615	1594
1616	1601
1617	1609
1618	1617
1619	1624
1620	1632
1621	1640
1622	1648
1623	1656
1624	1664
1625	1671
1626	1679
1627	1687
1628	1695
1629	1704
1630	1712
1631	1720
1632	1728
1633	1736
1634	1745
1635	1753
1636	1761
1637	1770
1638	1778
1639	1787
1640	1795
1641	1804
1642	1812
1643	1821
1644	1829
1645	1838
1646	1847
1647	1856
1648	1865
1649	1874
1650	1882
1651	1880
1652	1878
1653	1876
1654	1873
1655	1871
1656	1869
1657	1867
1658	1865
1659	1862
1660	1860
1661	1858
1662	1856
1663	1853
1664	1851
1665	1849
1666	1847
1667	1845
1668	1842
1669	1840
1670	1838
1671	1836
1672	1834
1673	1831
1674	1829
1675	1827
1676	1825
1677	1823
1678	1820
1679	1818
1680	1816
1681	1814
1682	1812
1683	1810
1684	1807
1685	1805
1686	1803
1687	1801
1688	1799
1689	1797
1690	1795
1691	1792
1692	1790
1693	1788
1694	1786
1695	1784
1696	1782
1697	1780
1698	1777
1699	1775
1700	1773
1701	1776
1702	1779
1703	1782
1704	1786
1705	1789
1706	1792
1707	1795
1708	1798
1709	1801
1710	1804
1711	1807
1712	1811
1713	1814
1714	1817
1715	1820
1716	1823
1717	1826
1718	1829
1719	1833
1720	1836
1721	1839
1722	1842
1723	1845
1724	1849
1725	1852
1726	1855
1727	1858
1728	1861
1729	1865
1730	1868
1731	1871
1732	1874
1733	1878
1734	1881
1735	1884
1736	1887
1737	1891
1738	1894
1739	1897
1740	1901
1741	1904
1742	1907
1743	1911
1744	1914
1745	1917
1746	1920
1747	1924
1748	1927
1749	1930
1750	1934
1751	1937
1752	1941
1753	1945
1754	1948
1755	1952
1756	1955
1757	1959
1758	1963
1759	1966
1760	1970
1761	1973
1762	1977
1763	1981
1764	1984
1765	1988
1766	1992
1767	1995
1768	1999
1769	2003
1770	2006
1771	2010
1772	2014
1773	2017
1774	2021
1775	2025
1776	2029
1777	2032
1778	2036
1779	2040
1780	2044
1781	2047
1782	2051
1783	2055
1784	2059
1785	2062
1786	2066
1787	2070
1788	2074
1789	2078
1790	2082
1791	2085
1792	2089
1793	2093
1794	2097
1795	2101
1796	2105
1797	2108
1798	2112
1799	2116
1800	2120
1801	2135
1802	2150
1803	2164
1804	2179
1805	2194
1806	2209
1807	2225
1808	2240
1809	2256
1810	2271
1811	2287
1812	2303
1813	2318
1814	2334
1815	2351
1816	2367
1817	2383
1818	2400
1819	2416
1820	2433
1821	2450
1822	2467
1823	2484
1824	2501
1825	2518
1826	2535
1827	2553
1828	2570
1829	2588
1830	2606
1831	2615
1832	2625
1833	2634
1834	2644
1835	2654
1836	2663
1837	2673
1838	2682
1839	2692
1840	2702
1841	2712
1842	2721
1843	2731
1844	2741
1845	2751
1846	2761
1847	2771
1848	2781
1849	2791
1850	2801
1851	2762
1852	2797
1853	2773
1854	2832
1855	2787
1856	3005
1857	3128
1858	3089
1859	3071
1860	3216
1861	3106
1862	3228
1863	3431
1864	3492
1865	3472
1866	3475
1867	3465
1868	3652
1869	3650
1870	3608
1871	3564
1872	3789
1873	3922
1874	4167
1875	4145
1876	4063
1877	3988
1878	4126
1879	3980
1880	3907
1881	3974
1882	4011
1883	4205
1884	4274
1885	4348
1886	4339
1887	4464
1888	4593
1889	4668
1890	4764
1891	4702
1892	4845
1893	5034
1894	5097
1895	5270
1896	5375
1897	5444
1898	5588
1899	5700
1900	5856
1901	5634
1902	5677
1903	5902
1904	6050
1905	6090
1906	6185
1907	6367
1908	6385
1909	6425
1910	6568
1911	6688
1912	6914
1913	7158
1914	6003
1915	5688
1916	5758
1917	5792
1918	5853
1919	5074
1920	5485
1921	6039
1922	6536
1923	5395
1924	6276
1925	6929
1926	7073
1927	7733
1928	8025
1929	7949
1930	7796
1931	7165
1932	6596
1933	6977
1934	7570
1935	8083
1936	8733
1937	9192
1938	9798
1939	10610
1940	10600
1941	11210
1942	11260
1943	11560
1944	11940
1945	8857
1946	4350
1947	4780
1948	5560
1949	6440
1950	7615
1951	8252
1952	8933
1953	9624
1954	10290
1955	11370
1956	12120
1957	12740
1958	13220
1959	14080
1960	15120
1961	15600
1962	16130
1963	16450
1964	17310
1965	18020
1966	18420
1967	18440
1968	19350
1969	20480
1970	21270
1971	21730
1972	22530
1973	23480
1974	23670
1975	23620
1976	24890
1977	25650
1978	26400
1979	27460
1980	27690
1981	27760
1982	27550
1983	28110
1984	29010
1985	29710
1986	30350
1987	30810
1988	31710
1989	32490
1990	31250
1991	32670
1992	33140
1993	32660
1994	33410
1995	33940
1996	34180
1997	34750
1998	35370
1999	36060
2000	37170
2001	37590
2002	37550
2003	37450
2004	37840
2005	38130
2006	39660
2007	41060
2008	41460
2009	39470
2010	41120
2011	42380
2012	42660
2013	42740
2014	43400
2015	44030
2016	44640
2017	45260
2018	45860
2019	46480
