Year	Percent
1950	8.13426
1955	9.49073
1960	8.92454
1965	7.38578
1970	6.93745
1975	6.78148
1980	8.16259
1985	8.64043
1990	6.67532
1995	6.2529
2000	5.77407
2005	4.37395
2010	4.55249
2015	5.38666
2020	5.21668
2025	5.0813
2030	4.83165
2035	4.53588
2040	4.43502
2045	4.68191
2050	4.96145
2055	5.03296
2060	4.96187
2065	4.85349
2070	4.80357
2075	4.88234
2080	5.04351
2085	5.14539
2090	5.12048
2095	5.00884
2100	4.89693