Year	Percent
1950	9.96436
1955	9.78537
1960	9.65628
1965	11.07461
1970	8.7856
1975	7.30674
1980	5.67689
1985	5.0712
1990	7.45452
1995	6.4819
2000	6.62266
2005	5.95129
2010	3.97765
2015	3.58897
2020	3.9313
2025	4.53914
2030	4.57001
2035	3.95284
2040	3.70706
2045	3.75788
2050	3.89106
2055	3.96608
2060	3.92431
2065	3.86317
2070	3.87113
2075	3.93519
2080	4.02137
2085	4.08485
2090	4.12938
2095	4.15645
2100	4.20296