Month Growth rate same period previous year 1971-01-01 8.2352941176470700 1971-02-01 8.5937500000000100 1971-03-01 8.5271317829457400 1971-04-01 8.4291187739463700 1971-05-01 9.8859315589353500 1971-06-01 10.1886792452830000 1971-07-01 9.7744360902255500 1971-08-01 8.9887640449438300 1971-09-01 8.1481481481481400 1971-10-01 8.8560885608856000 1971-11-01 8.7912087912087800 1971-12-01 9.1240875912408800 1972-01-01 9.0579710144927600 1972-02-01 8.6330935251798400 1972-03-01 8.5714285714285600 1972-04-01 9.5406360424028100 1972-05-01 8.6505190311418800 1972-06-01 8.2191780821917900 1972-07-01 9.2465753424657600 1972-08-01 9.9656357388316000 1972-09-01 10.2739726027397000 1972-10-01 10.1694915254237000 1972-11-01 10.1010101010101000 1972-12-01 10.0334448160535000 1973-01-01 9.9667774086378600 1973-02-01 10.9271523178808000 1973-03-01 11.1842105263158000 1973-04-01 10.6451612903226000 1973-05-01 10.5095541401274000 1973-06-01 11.0759493670886000 1973-07-01 11.2852664576802000 1973-08-01 11.8750000000000000 1973-09-01 12.7329192546584000 1973-10-01 12.3076923076923000 1973-11-01 12.2324159021407000 1973-12-01 14.5896656534955000 1974-01-01 15.4078549848943000 1974-02-01 15.2238805970149000 1974-03-01 15.0887573964497000 1974-04-01 14.8688046647230000 1974-05-01 14.4092219020173000 1974-06-01 13.9601139601140000 1974-07-01 14.0845070422535000 1974-08-01 13.9664804469274000 1974-09-01 12.9476584022039000 1974-10-01 13.4246575342466000 1974-11-01 14.1689373297003000 1974-12-01 11.9363395225464000 1975-01-01 11.5183246073298000 1975-02-01 10.8808290155440000 1975-03-01 10.7969151670951000 1975-04-01 10.4060913705584000 1975-05-01 10.8312342569269000 1975-06-01 11.2500000000000000 1975-07-01 10.6172839506173000 1975-08-01 10.2941176470588000 1975-09-01 10.2439024390244000 1975-10-01 9.9033816425120900 1975-11-01 9.3078758949880600 1975-12-01 8.7677725118483400 1976-01-01 8.6854460093896500 1976-02-01 9.3457943925233600 1976-03-01 9.2807424593967500 1976-04-01 9.8850574712643600 1976-05-01 10.0000000000000000 1976-06-01 10.1123595505618000 1976-07-01 10.0446428571429000 1976-08-01 10.2222222222222000 1976-09-01 10.3982300884956000 1976-10-01 10.3296703296703000 1976-11-01 10.2620087336245000 1976-12-01 10.6753812636166000 1977-01-01 10.5831533477322000 1977-02-01 10.0427350427351000 1977-03-01 9.9787685774946900 1977-04-01 9.6234309623431100 1977-05-01 9.5041322314049700 1977-06-01 8.9795918367347000 1977-07-01 8.9249492900608600 1977-08-01 9.0725806451612900 1977-09-01 8.6172344689378800 1977-10-01 9.1633466135458000 1977-11-01 8.7128712871287200 1977-12-01 8.6614173228346500 1978-01-01 8.0078124999999900 1978-02-01 8.3495145631067800 1978-03-01 8.3011583011583100 1978-04-01 8.2061068702290200 1978-05-01 8.1132075471698000 1978-06-01 8.2397003745318200 1978-07-01 8.0074487895716800 1978-08-01 7.7634011090572900 1978-09-01 7.9335793357933400 1978-10-01 7.4817518248175200 1978-11-01 7.4681238615664700 1978-12-01 7.2463768115942100 1979-01-01 7.4141048824593200 1979-02-01 6.8100358422939100 1979-03-01 6.5953654188948200 1979-04-01 5.9964726631393200 1979-05-01 5.7591623036649300 1979-06-01 5.1903114186851300 1979-07-01 5.1724137931034500 1979-08-01 4.8027444253859400 1979-09-01 5.1282051282051300 1979-10-01 4.9235993208828600 1979-11-01 5.0847457627118700 1979-12-01 5.2364864864864700 1980-01-01 5.3872053872053900 1980-02-01 5.5369127516778600 1980-03-01 6.0200668896321100 1980-04-01 6.3227953410981800 1980-05-01 6.2706270627062800 1980-06-01 6.5789473684210600 1980-07-01 6.7213114754098200 1980-08-01 6.8739770867430500 1980-09-01 6.3414634146341500 1980-10-01 5.8252427184466100 1980-11-01 5.9677419354838800 1980-12-01 5.9390048154093200 1981-01-01 5.7507987220447300 1981-02-01 5.5643879173291000 1981-03-01 5.0473186119873700 1981-04-01 4.6948356807511800 1981-05-01 4.6583850931677100 1981-06-01 4.1666666666666700 1981-07-01 3.9938556067588500 1981-08-01 3.8284839203675200 1981-09-01 3.9755351681957200 1981-10-01 4.1284403669724600 1981-11-01 3.9573820395738100 1981-12-01 3.7878787878787900 1982-01-01 3.7764350453172200 1982-02-01 3.6144578313252900 1982-03-01 3.6036036036036200 1982-04-01 3.7369207772795200 1982-05-01 3.4124629080118700 1982-06-01 3.7037037037037100 1982-07-01 3.6927621861152200 1982-08-01 3.6873156342182900 1982-09-01 3.5294117647058900 1982-10-01 3.3773861967694800 1982-11-01 3.3674963396779000 1982-12-01 3.3576642335766300 1983-01-01 3.2023289665211100 1983-02-01 3.3430232558139600 1983-03-01 3.1884057971014500 1983-04-01 3.0259365994236200 1983-05-01 3.2998565279770300 1983-06-01 3.1428571428571500 1983-07-01 3.1339031339031400 1983-08-01 3.1294452347084000 1983-09-01 3.1249999999999900 1983-10-01 3.2670454545454600 1983-11-01 3.2577903682719700 1983-12-01 2.8248587570621500 1984-01-01 2.6798307475317200 1984-02-01 2.6722925457102700 1984-03-01 2.6685393258426800 1984-04-01 2.5174825174825200 1984-05-01 2.0833333333333400 1984-06-01 2.0775623268697900 1984-07-01 1.9337016574585500 1984-08-01 2.0689655172413800 1984-09-01 1.9283746556473800 1984-10-01 1.9257221458046600 1984-11-01 1.9204389574759800 1984-12-01 2.3351648351648400 1985-01-01 2.4725274725274800 1985-02-01 2.3287671232876700 1985-03-01 2.4623803009576100 1985-04-01 2.4556616643929100 1985-05-01 2.7210884353741500 1985-06-01 2.5780189959294500 1985-07-01 2.5745257452574500 1985-08-01 2.4324324324324300 1985-09-01 2.5675675675675800 1985-10-01 2.5641025641025700 1985-11-01 2.5572005383580100 1985-12-01 2.6845637583892600 1986-01-01 2.5469168900804300 1986-02-01 2.5435073627844700 1986-03-01 2.5367156208277600 1986-04-01 2.5299600532623200 1986-05-01 2.3841059602649000 1986-06-01 2.3809523809523800 1986-07-01 2.5099075297225800 1986-08-01 2.5065963060686000 1986-09-01 2.5032938076416200 1986-10-01 2.6315789473684200 1986-11-01 2.4934383202099600 1986-12-01 2.2222222222222200 1987-01-01 2.3529411764705900 1987-02-01 2.4804177545691900 1987-03-01 2.3437499999999900 1987-04-01 2.4675324675324700 1987-05-01 2.3285899094437100 1987-06-01 3.2299741602067200 1987-07-01 3.3505154639175400 1987-08-01 3.2175032175032200 1987-09-01 3.2133676092544900 1987-10-01 3.2051282051282100 1987-11-01 3.0729833546735100 1987-12-01 2.9411764705882400 1988-01-01 2.8097062579821200 1988-02-01 2.8025477707006400 1988-03-01 2.7989821882951700 1988-04-01 2.6615969581749100 1988-05-01 2.5284450063211100 1988-06-01 1.7521902377972300 1988-07-01 1.4962593516209500 1988-08-01 1.4962593516209500 1988-09-01 1.6189290161892900 1988-10-01 1.4906832298136700 1988-11-01 1.8633540372670800 1988-12-01 1.9875776397515400 1989-01-01 2.1118012422360300 1989-02-01 1.9826517967781800 1989-03-01 2.1039603960396200 1989-04-01 2.7160493827160500 1989-05-01 2.9593094944513000 1989-06-01 3.3210332103321100 1989-07-01 3.4398034398034400 1989-08-01 3.4398034398034400 1989-09-01 3.3088235294117700 1989-10-01 3.4271725826193300 1989-11-01 3.0487804878048700 1989-12-01 3.1668696711327800 1990-01-01 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