Year	Percent
1950	7.55564
1955	7.81868
1960	9.801
1965	10.83657
1970	10.66377
1975	9.19138
1980	8.27198
1985	8.13017
1990	8.41425
1995	8.69705
2000	7.74154
2005	5.94112
2010	5.43066
2015	6.32571
2020	6.99867
2025	6.46451
2030	5.899
2035	5.54095
2040	5.51588
2045	5.70618
2050	5.84963
2055	5.74544
2060	5.48229
2065	5.27462
2070	5.23291
2075	5.30468
2080	5.36121
2085	5.30776
2090	5.15323
2095	5.00389
2100	4.94132