Year	Percent
1950	7.52272
1955	8.89948
1960	9.37475
1965	8.10752
1970	7.73
1975	8.01752
1980	7.92956
1985	7.37376
1990	6.38604
1995	5.37639
2000	5.90349
2005	6.64969
2010	6.38323
2015	5.96226
2020	6.01307
2025	5.2598
2030	5.39795
2035	5.6911
2040	5.82925
2045	5.75684
2050	5.59253
2055	5.4367
2060	5.39562
2065	5.47262
2070	5.53782
2075	5.5121
2080	5.40729
2085	5.29158
2090	5.22892
2095	5.22115
2100	5.22983