Year	aa-index	Delta(aa)
1619	15.1	3.1
1620	12.3	3.3
1621	12.3	2.8
1622	13.6	2
1623	13.9	2.4
1624	11.6	4.3
1625	18.3	2
1626	17.7	4
1627	16.3	3.8
1628	16	2.4
1629	12.9	4.6
1630	4.7	7.9
1631	7.5	4.6
1632	9.9	2.3
1633	9.4	2.2
1634	5.8	3.3
1635	5.7	4.8
1636	9.7	3.5
1637	8	5.8
1638	17.7	0.6
1639	18.2	1
1640	12.5	3.9
1641	8.7	5
1642	14.2	2.9
1643	10	1.5
1644	6	2.6
1645	3.4	2.7
1646	3.7	1.2
1647	1.4	2.9
1648	0	4.5
1649	1.5	3.5
1650	2.6	2.7
1651	1.9	5.5
1652	4.9	3.9
1653	4	3.7
1654	5.8	2.6
1655	5.5	2.3
1656	2.8	1.3
1657	3.5	1.9
1658	2.6	3
1659	2.3	3.2
1660	5.1	2.1
1661	3.7	2.8
1662	1.7	4.3
1663	2.2	3.2
1664	1.8	2.5
1665	2.2	2.5
1666	1.5	1.9
1667	0.1	1.9
1668	2.3	2.1
1669	2	4.1
1670	3.7	3.7
1671	5.9	3.4
1672	5.8	4.1
1673	4.2	5.2
1674	6.7	4
1675	4.5	6
1676	6.9	4.5
1677	5.3	4.4
1678	5.4	3.7
1679	3.2	3.9
1680	4	2.1
1681	2.9	2.7
1682	2.9	3.4
1683	3.1	3
1684	5.7	3.2
1685	3.4	5.6
1686	5.1	4.3
1687	4.8	4.1
1688	4.4	3.6
1689	4.1	3
1690	2.5	3.8
1691	2.4	3.4
1692	2.1	3.2
1693	1	3.5
1694	2.5	3.7
1695	3.9	4.1
1696	2.7	4.1
1697	3.8	3.7
1698	4.8	3.8
1699	5.1	3.4
1700	6	2.8
1701	7.2	2.9
1702	7.4	3.1
1703	8.8	2.8
1704	9.3	3.2
1705	9.8	3.7
1706	7	2.5
1707	7.4	2.1
1708	6.4	2.3
1709	6.1	2.3
1710	5.6	2.6
1711	4.3	2
1712	4.2	2.4
1713	6.4	1.4
1714	7.7	2.1
1715	10.3	3.4
1716	13.1	3.4
1717	14.5	3.6
1718	14.9	4.5
1719	17.1	2.4
1720	18.8	1.9
1721	19.3	4.4
1722	19.8	1.4
1723	15.1	1.9
1724	16.8	1.9
1725	13.8	3.7
1726	17.1	1.5
1727	17	3.3
1728	17.4	3.8
1729	19.1	2.6
1730	19	4.1
1731	11.8	6.5
1732	15.1	1.9
1733	11.9	2.1
1734	7.7	6.6
1735	15.2	1.5
1736	17.7	1.1
1737	15.5	3.8
1738	15.6	4.8
1739	18.6	3.8
1740	14.5	5.4
1741	11.5	5.7
1742	16.2	1.2
1743	15.2	1.8
1744	7.9	3.5
1745	7.4	2.8
1746	9.3	3.7
1747	7.6	5.5
1748	14.9	0.1
1749	17	1.3
1750	17	2.9
1751	18.2	0.8
1752	19	1.6
1753	18.7	1.1
1754	14.9	1.1
1755	15.5	1.4
1756	14.5	1.4
1757	15.2	1.7
1758	16.6	1.3
1759	15	1.3
1760	15.6	2.4
1761	22.4	0.9
1762	21.9	1.2
1763	21.8	1.5
1764	23.2	0.3
1765	18.5	1.6
1766	15.8	0.9
1767	18.1	0.4
1768	19.8	0.2
1769	19.5	0.4
1770	20.5	0.5
1771	25	0.9
1772	26	1.7
1773	22.4	0.8
1774	21.8	0.8
1775	16.9	0.3
1776	14.6	1.7
1777	18.8	3.3
1778	18.4	4.8
1779	20.8	2.5
1780	23.4	2.5
1781	25.7	2.2
1782	22.8	2.3
1783	20.8	1
1784	18.1	0.5
1785	18.1	1.4
1786	23.2	1.6
1787	24.3	1.8
1788	25.5	1.3
1789	25.4	1
1790	24.2	0.2
1791	20	0.5
1792	17	1.2
1793	14.6	1.2
1794	14.4	1.1
1795	11.7	1.7
1796	9.5	1.4
1797	7.5	1
1798	7.8	0.7
1799	8.6	1.5
1800	9.9	1.2
1801	12.7	1.2
1802	14	0.8
1803	11.5	2
1804	11.5	1
1805	12.1	1.5
1806	11.2	1
1807	6.6	2
1808	6.7	1.6
1809	6.6	1.4
1810	3.3	1.9
1811	4.9	1.6
1812	7.5	1.1
1813	9.3	0.9
1814	9.4	0.9
1815	11.6	1.5
1816	14.4	0.7
1817	12.2	0.7
1818	12.3	1.4
1819	13.1	0.7
1820	12.2	1.2
1821	9.9	1.1
1822	9.9	0.6
1823	9.3	0.7
1824	12.2	0.9
1825	12.8	0.3
1826	13.9	1
1827	14.2	1
1828	16.8	0.9
1829	22.7	1.1
1830	26.2	0.6
1831	24.8	0.9
1832	22.5	1
1833	18.2	0.8
1834	17	0.9
1835	20.9	1.1
1836	23.5	0.9
1837	22.5	1
1838	21.3	1.4
1839	23.1	1.4
1840	21.7	1.2
1841	20	1.6
1842	20.2	1.3
1843	15.9	0.9
1844	14.3	1.2
1845	17.9	1
1846	19.2	0.7
1847	22.3	1.4
1848	23.9	1
1849	21.1	0.5
1850	17.6	0.7
1851	20	0.3
1852	20.8	0.2
1853	19.6	0.4
1854	16.6	0.3
1855	12.8	1.1
1856	10.9	0.8
1857	13.6	0.3
1858	18.3	1
1859	20.6	1.2
1860	20.3	0.7
1861	18.6	0.8
1862	20.8	1.1
1863	21.2	0.4
1864	23.7	1.3
1865	20.9	0.9
1866	18.1	0.5
1867	14.3	0.9
1868	18.2	--
1869	20.9	--
1870	22.2	--
1871	21.4	--
1872	23.7	--
1873	20.2	--
1874	14.6	--
1875	11.3	--
1876	9.6	--
1877	9	--
1878	7.3	--
1879	7	--
1880	11.6	--
1881	13.6	--
1882	22.9	--
1883	17.6	--
1884	14.2	--
1885	15.4	--
1886	20.6	--
1887	16.4	--
1888	15.4	--
1889	12.5	--
1890	10.7	--
1891	17.1	--
1892	24.2	--
1893	17	--
1894	20.7	--
1895	18.1	--
1896	18	--
1897	13.6	--
1898	15.1	--
1899	13.1	--
1900	7.5	--
1901	6.1	--
1902	6.5	--
1903	12	--
1904	11.6	--
1905	15	--
1906	12.5	--
1907	16	--
1908	17.1	--
1909	17.2	--
1910	17.6	--
1911	15.9	--
1912	8.9	--
1913	8.6	--
1914	11	--
1915	15.6	--
1916	19.9	--
1917	18.3	--
1918	21.6	--
1919	22.5	--
1920	17.6	--
1921	16.6	--
1922	18.7	--
1923	10.2	--
1924	10.2	--
1925	13.1	--
1926	19.9	--
1927	16.6	--
1928	17.7	--
1929	19.4	--
1930	28.6	--
1931	16.8	--
1932	19	--
1933	16.3	--
1934	13.4	--
1935	15.6	--
1936	16.2	--
1937	19	--
1938	23.6	--
1939	23.2	--
1940	23.5	--
1941	24.9	--
1942	21.8	--
1943	25.9	--
1944	17.8	--
1945	16.4	--
1946	25.3	--
1947	25.2	--
1948	22.6	--
1949	21.2	--
1950	24.4	--
1951	28.7	--
1952	27.8	--
1953	22.2	--
1954	17.2	--
1955	17.6	--
1956	24.7	--
1957	29.3	--
1958	28.4	--
1959	30.2	--
1960	32.9	--
1961	22.4	--
1962	21.5	--
1963	21.2	--
1964	17.2	--
1965	14	--
1966	17.3	--
1967	19.8	--
1968	22.5	--
1969	19.9	--
1970	20	--
1971	20	--
1972	20.6	--
1973	26.7	--
1974	30.4	--
1975	23.7	--
1976	22.2	--
1977	20.2	--
1978	25.5	--
1979	22.4	--
1980	18	--
1981	24.4	--
1982	33.2	--
1983	29.5	--
1984	28.9	--
1985	22.5	--
1986	21	--
1987	19	--
1988	22.6	--
1989	30.9	--
1990	26.4	--
1991	34.3	--
1992	27.2	--
1993	25.4	--
1994	29.3	--
1995	21.9	--
1996	18.5	--
1997	16	--
1998	21.1	--
1999	22.3	--
2000	25.4	--
2001	22.4	--
2002	22.7	--
2003	37.7	--