Year	annual % growth
1968	2.7007124288772104
1969	-0.0325903485714889
1970	5.101065418124364
1971	2.180566223503291
1972	5.95559870820415
1973	-0.39510622085329317
1974	7.729799634561601
1975	6.550887851924941
1976	11.215798716436026
1977	-0.7785499031302123
1978	5.4781767151463185
1979	7.511885009506017
1980	-5.527257306227511
1981	5.059376313924702
1982	-5.741042067810426
1983	3.3761032855132953
1984	1.2166297258139167
1985	-3.3388132430100512
1986	-6.027542195855148
1987	-7.551256282649234
1988	9.097679695301665
1989	-2.8167780135065925
1990	0.25189297103315766
1991	19.909138928299484
1992	-8.233400604326917
1993	7.859703814825508
1994	-0.9355498400897915
1995	2.6635622058941806
1996	6.655951823816125
1997	-2.2805265159647803
1998	1.2687398369192664
1999	9.629383336661746
2000	-1.7004489658651494
2001	7.205683321245175
2002	-2.1278679910337104
2003	7.815523359442622
2004	4.494756184801503
2005	6.767325268106688
2006	4.568299555899586
2007	5.85843611537247
2008	8.024463794873043
2009	5.702477149668027
2010	10.61315452743213
2011	2.2000494301524895
2012	1.1815732397005405
2013	7.809557676537594
2014	8.56946453745195
2015	6.287846682955944
2016	5.857559947941098
2017	3.4133331753404264
2018	3.000000000452218
2019	3.7999999992633917
2020	1.899999999619311
2021	3.0000000016833894
2022	3.99999999838802
2023	4.700000001618861